II. Put the verbs in brackets into the right tense. 1. I never (lend) a friend a large amount of money, because I always (think) it would almost certainly be the end of the friendship. But one day I (have) a very good reason for borrowing money myself. I (need) an urgent operation. 2. We think of democracy as a modern invention, but in fact the world's most perfect democracy probably (exist) in Ancient Athens in 500 B.C. - if you (be) not a woman or a slave. 3. Two French architects - Frederic Augusta Bartholdi and Alexander Gustave Eiffel (design) and (build) in Paris the Statue of Liberty which has stood on Liberty Island in New York Island since 1886. 4. My brother (work) in a bank for about five years, and actually he wasn't very ambitious or career-minded. Then a new manager (persuade) him to take the job more seriously, so he (start) studying to become a manager himself. For five years he (go) to evening classes to get qualifications he needed... but it was worth it. 5. It (snow) when I (get up) this morning. The children next door (make) a snowman. I quickly (put on) my warm clothes and (race) outside to help them. 6. Ann was worn out. The baby (cough) all night and she (not to get) any sleep. 7. Our team (play) really well. We (win) at half time, but in the end we (lose). 8. Kate was a successful model before she (become) a teacher. She (earn) a lot of money for a few years but then she (give) it all up for the classroom. 9. When my mother (come) downstairs this morning, she couldn't believe her eyes. We (do) all the washing-up and (made) breakfast for her. We (work) for an hour before she (wake up). 10. Imagine my delight when I (do) really well in all my exams! My childhood dream (come) true and I (become) a student of the university.

Alright class, let's go through each sentence together and put the verbs in the correct tense.

1. I never lend a friend a large amount of money, because I always think it would almost certainly be the end of the friendship. But one day I had a very good reason for borrowing money myself. I needed an urgent operation.

Explanation: In this sentence, we have three verbs - "lend," "think," and "have." The first verb, "lend," should be in the present simple tense because it is a general statement. The second verb, "think," should also be in the present simple tense because it is expressing a habitual action. The third verb, "have," should be in the past simple tense because it is referring to a specific incident in the past.

2. We think of democracy as a modern invention, but in fact the world's most perfect democracy probably existed in Ancient Athens in 500 B.C. - if you were not a woman or a slave.

Explanation: In this sentence, we have two verbs - "exist" and "be." The first verb, "exist," should be in the past simple tense because it is referring to a specific time in the past. The second verb, "be," should be in the past simple tense because it is expressing a hypothetical condition in the past.

3. Two French architects - Frederic Augusta Bartholdi and Alexander Gustave Eiffel designed and built in Paris the Statue of Liberty which has stood on Liberty Island in New York Island since 1886.

Explanation: In this sentence, we have two pairs of verbs - "design" and "build," and "has stood" and "since." The first pair of verbs, "design" and "build," should be in the past simple tense because they are referring to actions that occurred in the past. The second pair of verbs, "has stood" and "since," should be in the present perfect tense because they are referring to an action that started in the past and continues up to the present.

4. My brother worked in a bank for about five years, and actually he wasn't very ambitious or career-minded. Then a new manager persuaded him to take the job more seriously, so he started studying to become a manager himself. For five years he went to evening classes to get the qualifications he needed... but it was worth it.

Explanation: In this sentence, we have six pairs of verbs - "worked," "wasn't," "persuaded," "started," "went," and "was worth." The first verb, "worked," should be in the past simple tense because it is referring to a past action. The second verb, "wasn't," should be in the past simple tense because it is expressing a state of being in the past. The third verb, "persuaded," should be in the past simple tense because it is referring to a past action. The fourth verb, "started," should be in the past simple tense because it is referring to a past action. The fifth verb, "went," should be in the past simple tense because it is referring to a past action. The sixth verb, "was worth," should be in the past simple tense because it is referring to a past action.

5. It was snowing when I got up this morning. The children next door were making a snowman. I quickly put on my warm clothes and raced outside to help them.

Explanation: In this sentence, we have three pairs of verbs - "was snowing," "were making," and "put on" and "raced." The first pair of verbs, "was snowing" and "were making," should be in the past continuous tense because they are referring to ongoing actions in the past. The second pair of verbs, "put on" and "raced," should be in the past simple tense because they are referring to completed actions in the past.

6. Ann was worn out. The baby had been coughing all night and she hadn't gotten any sleep.

Explanation: In this sentence, we have three verbs - "was," "had been coughing," and "hadn't gotten." The first verb, "was," should be in the past simple tense because it is referring to a state of being in the past. The second verb, "had been coughing," should be in the past perfect continuous tense because it is referring to an ongoing action in the past that started before another past action. The third verb, "hadn't gotten," should be in the past perfect tense because it is referring to a past action that happened before another past action.

7. Our team played really well. We were winning at half-time, but in the end, we lost.

Explanation: In this sentence, we have three pairs of verbs - "played," "were winning," and "lost." The first verb, "played," should be in the past simple tense because it is referring to a past action. The second pair of verbs, "were winning" and "lost," should both be in the past simple tense because they are referring to completed actions in the past.

8. Kate was a successful model before she became a teacher. She earned a lot of money for a few years but then she gave it all up for the classroom.

Explanation: In this sentence, we have three pairs of verbs - "was," "became," and "earned" and "gave." The first pair of verbs, "was" and "became," should both be in the past simple tense because they are referring to completed actions in the past. The second pair of verbs, "earned" and "gave," should both be in the past simple tense because they are referring to completed actions in the past.

9. When my mother came downstairs this morning, she couldn't believe her eyes. We had done all the washing-up and made breakfast for her. We had been working for an hour before she woke up.

Explanation: In this sentence, we have six pairs of verbs - "came," "couldn't believe," "had done," "made," "had been working," and "woke up." The first verb, "came," should be in the past simple tense because it is referring to a specific action in the past. The second verb, "couldn't believe," should be in the past simple tense because it is referring to a specific action in the past. The third and fourth verbs, "had done" and "made," should both be in the past perfect tense because they are referring to completed actions in the past that happened before another past action. The fifth verb, "had been working," should be in the past perfect continuous tense because it is referring to an ongoing action in the past that started before another past action. The sixth verb, "woke up," should be in the past simple tense because it is referring to a specific action in the past.

10. Imagine my delight when I did really well in all my exams! My childhood dream came true and I became a student of the university.

Explanation: In this sentence, we have three verbs - "did," "came," and "became." The first verb, "did," should be in the past simple tense because it is referring to a specific action in the past. The second verb, "came," should be in the past simple tense because it is referring to a specific action in the past. The third verb, "became," should be in the past simple tense because it is referring to a specific action in the past.

I hope this detailed explanation helps you understand the use of different verb tenses in these sentences. If you have any further questions, feel free to ask!