7.(单选题,2分)() correctly, humour can break the ice and improve performance.

24. (单选题, 1分)When they had finished playing, the children were made to () all the toys they had taken out.

23. (单选题, 1分)1. Humor not only contributes () our health, but also helps us to face any difficulties and challenges in life.

22. (单选题, 1分)As we all know, humor is more of a () skill.

21. (单选题, 1分)Nowadays a premature baby has a very good chance of ().

20. (单选题, 1分)() I felt very tired, I tried to finish the work.

19. (单选题, 1分)She seems to into a lot of trouble at her joB.

18. (单选题, 1分)In the exam, the () you are, the () mistakes you will make.

17. (单选题, 1分)The homework is not () to finish by himself.

16. (单选题, 1分)He got used to () earlier in summer.

15. (单选题, 1分)I’ll go swimming with you if I () free tomorrow.