2.　　　 Thank you for your considerate/consideration.

1.　　　 1．I have some difficulty explaining/to explain the problem.

25. About 200 students will compete in/against the sports meeting for/against many prizes.

高一下模块四Unit1名师导学精选练习

24. Mr Brown and/as well as his wife is going to attend the meeting because they have been invited.

23. When we will have the summer holiday remains to see/ to be seen.

22. Whether/If you will go there or not, I'll go there.

21. Where he lives / Where he lives in is unknown to me.

20. The little girl has a gift for/on music. She can sing really beautifully.

19. Not until the early years of the 19th century man did know/ did man know what heat was.

18. The fact that/when he explained at the meeting is known to us all.