1 They suggested by bus instead of by plane. (TRAVEL) 2 It seems difficult everything about this topic. (KNOW)
3 We were all looking forward the New Year in New York.
(CELEBRATE)
4 We are planning to Europe this summer. (GO)
5 It was very difficult for him to quit . (SMOKE)
6 She tried to avoid unnecessary mistakes. (MAKE)
7 I let him to his friend’s house after he had done his homework. (GO)
8 Can you imagine the painting before the Christmas holidays? (FINISH)
9 We are used up early in the morning. (GET)
10 The suspect denied said that in public. (HAVE)​

1. They suggested traveling by bus instead of by plane.
Explanation: The verb "suggest" is used in the pattern "suggest + ing" when suggesting an action or an idea.

2. It seems difficult to know everything about this topic.
Explanation: The verb "seem" is used with an adjective or an adjective clause, and in this case, "difficult" is the adjective describing the difficulty of knowing everything about the topic.

3. We were all looking forward to celebrating the New Year in New York.
Explanation: The phrase "to look forward to" is followed by a gerund (verb + ing), indicating anticipation or excitement about something.

4. We are planning to go to Europe this summer.
Explanation: The verb "plan" is followed by an infinitive verb (to + verb) to indicate the intended action.

5. It was very difficult for him to quit smoking.
Explanation: The verb "quit" is followed by an infinitive verb (to + verb) to indicate the action of stopping a habit or activity.

6. She tried to avoid making unnecessary mistakes.
Explanation: The verb "avoid" is followed by an infinitive verb (to + verb) to indicate the action of staying away from or not doing something.

7. I let him go to his friend's house after he had done his homework.
Explanation: The verb "let" is followed by an object and an infinitive verb (let + object + verb), indicating permission or allowing someone to do something.

8. Can you imagine finishing the painting before the Christmas holidays?
Explanation: The verb "imagine" is followed by a gerund (verb + ing) indicating the action being imagined or visualized.

9. We are used to getting up early in the morning.
Explanation: The phrase "to be used to" is followed by a gerund (verb + ing) indicating a habit or accustomed action.

10. The suspect denied having said that in public.
Explanation: The verb "deny" is followed by a gerund (verb + ing) indicating the action being denied. In this case, the suspect denied saying something in public.