3) Find correct items and complete the following sentences: 1. If we go to London, we'll visit our cousin. 2. If they their homework tonight, their teacher happy. 3. If the weather good, George swimming this weekend. 4. If he swimming this weekend,.. ..a wonderful time. 5. If you don't eat your dinner tonight, hungry. 6. If ..tired, they'll go to sleep early tonight. 7. If it she'll wear her new raincoat. 8. If you too many cookies after dinner tonight, get a stomachache. 9. If I .. ... too much coffee, get a headache.

1. If we go to London, we'll visit our cousin. (Correct)
Explanation: This sentence follows the structure of a first conditional sentence in English. The use of "if" introduces a condition (going to London), and the use of "will" expresses the result (visiting our cousin). This sentence is grammatically correct.

2. If they their homework tonight, their teacher happy. (Incomplete)
Correction: If they do their homework tonight, their teacher will be happy.
Explanation: In order to complete this sentence, we need to add the auxiliary verb "do" before the subject "they." This is necessary to form a complete sentence in the present simple tense. We also need to add the auxiliary verb "will" before the verb "be," as it indicates the future result. The corrected sentence should read, "If they do their homework tonight, their teacher will be happy."

3. If the weather good, George swimming this weekend. (Incomplete)
Correction: If the weather is good, George will go swimming this weekend.
Explanation: In this sentence, we need to add the verb "is" between "weather" and "good" to form a complete sentence in the present simple tense. Additionally, we need to add the auxiliary verb "will" before the verb "go," as it expresses the future action. The corrected sentence should read, "If the weather is good, George will go swimming this weekend."

4. If he swimming this weekend,.. ..a wonderful time. (Incomplete)
Correction: If he goes swimming this weekend, he will have a wonderful time.
Explanation: In order to complete this sentence, we need to add the verb "goes" between "he" and "swimming" to form a complete sentence in the present simple tense. We also need to add the personal pronoun "he" before the verb "will have," as it refers back to the subject of the sentence. The corrected sentence should read, "If he goes swimming this weekend, he will have a wonderful time."

5. If you don't eat your dinner tonight, hungry. (Incorrect)
Correction: If you don't eat your dinner tonight, you will be hungry.
Explanation: In this sentence, we need to add the personal pronoun "you" before the verb "will be," as it refers back to the subject of the sentence. Additionally, we need to include the auxiliary verb "will" before the verb "be," as it expresses the future condition. The corrected sentence should read, "If you don't eat your dinner tonight, you will be hungry."

6. If ..tired, they'll go to sleep early tonight. (Incomplete)
Correction: If they are tired, they'll go to sleep early tonight.
Explanation: This sentence is missing the subject before the verb "are." We need to add the personal pronoun "they" before the verb "are," as it refers to the subject of the sentence. The corrected sentence should read, "If they are tired, they'll go to sleep early tonight."

7. If it she'll wear her new raincoat. (Incorrect)
Correction: If it rains, she'll wear her new raincoat.
Explanation: In this sentence, we need to modify the subject to "it" instead of "she" to correctly express the condition of rain. Additionally, we need to add the auxiliary verb "will" before the verb "wear," as it expresses the future action. The corrected sentence should read, "If it rains, she'll wear her new raincoat."

8. If you too many cookies after dinner tonight, get a stomachache. (Incorrect)
Correction: If you eat too many cookies after dinner tonight, you will get a stomachache.
Explanation: This sentence is missing the verb "eat" before "too many cookies." We need to add the verb "eat" to show the action being performed. Additionally, we need to add the personal pronoun "you" before the verb "will get," as it refers back to the subject of the sentence. The corrected sentence should read, "If you eat too many cookies after dinner tonight, you will get a stomachache."

9. If I .. ... too much coffee, get a headache. (Incomplete)
Correction: If I drink too much coffee, I will get a headache.
Explanation: In order to complete this sentence, we need to add the verb "drink" before "too much coffee" to show the action being performed. Additionally, we need to add the personal pronoun "I" before the verb "will get," as it refers to the subject of the sentence. The corrected sentence should read, "If I drink too much coffee, I will get a headache."