29. A computer can only do ________ you have instructed it to do.

A. how　　 B. after　　 C. what　　 D. when

答：C。本句童为“电脑只能做你要求它傲的事。”

28. Can you make sure________ the gold ring?

A. where Alice had put　 B. where had Alice put

C. where Alice has put　 D. where has Alice put

答：C。宾语从句应用陈述语序，应用现在完成耐。

27. When do you think ________?

A. will he come　　　　　 B. he will come

C. is he coming　　　　　 D. did he come

答：B。do you think为插入语，含有插入语的特殊疑问句用陈述语序。

26. It worried her a bit________ her hair was turning grey.

A. while　　 B. that　　 　C. if　　　 D. for

答：B。It为形式主语，that引导的从句为真正主语。

25. _____ leaves last ought to turn off the lights.

A. Who　 　　　B. Anyone

C. Whoever　 　　D. The person

答：C。whoever=anyone who

24. _____ you do should be good for the people.

A. No matter what　　　　　 B. Whatever

C. No matter how　　　　　 D. However

答：B。whatever在意思上相当于no matter what,但含有no matter的从句一般不做主语或宾语。

23. One of the two men held the view________ the book said was right.

A. that what　 　B. what that　

C. that　　 　　D. whether

答：A。that为引导词，引导同位语从句，做view的同位语。

22. I’ll do________ I can to help you.

A. what　　 　　B. that　　

　C. which　 　　D. all what

答：A。car后省去了do，意为·我将傲我所能做的事去帮助你们”。what=all that

21. _______can be done has been done.

A. Which　　 B. When　 C. What　 D. That

答：C。本句童为“能做的事都做了”。

20. It is true________ he said surprised us all.

A. what　　 　　B. that　

C. that what　 　　D. what that

答：C。it为形式主语，真实主语为that从句，whath he said为从句中的主语。