1688] After Mary gave a report about the school, she _____ the guests around it.

[译文] 做了关于学校情况的报告后，她又带着客人参观学校。

　 A. went on showing 　 B. went on with showing

　 C. went on to show 　 D. keep on showing

[答案及简析] C。 go on to do sth. 接着干另一件事；go on doing sth.接着原来的事干。

1687] I can hardly hear the radio. Would you please _____?

[译文] 我听不见收音机的声音。请开大一点！

　 A. turn it on 　 B. turn it down

　 C. turn it up 　 D. turn it off

[答案及简析] C。 由于听不见，要求人家把收音机的声音开大一点。

1686] You will be late _____ you leave immediately.

[译文] 如果你不马上出发，你会迟到的。

　 A. until 　 B. unless

　 C. if 　 D. or

[答案及简析] B。 unless = if not 如果不；除非。

1685] Was it in the cinema _____ Mr Smith met you _____ you saw the film?

[译文] 你看电影的时候是不是史密斯先生在电影院碰到你的？

　 A. that; when 　 B. whom; then

　 C. there; what 　 D. which; where

[答案及简析] A。 强调句中带一个表示时间的定语从句。

1684] When she left college, she had her hair cut short and _____ it short ever since.

[译文] 大学毕业时，她把头发剪短了，从那时起她就一直留着短发。

　 A. wore 　 B. has worn

　 C. had worn 　 D. was wearing

[答案及简析] B。 ever since引起的短语与完成时态连用。

1683] -----We don’t have enough books. What would you like to _____?　-----How about two of us ____one?

[译文] --我们没有足够的书籍。你有什么建议？　　--两人用一本如何？

　 A. suggest; sharing 　 B. say; share

　 C. suggest; share 　 D. say; sharing

[答案及简析] A。 how about 后面接动名词，这儿是动名词的复合结构。

1682] -----The light is on. Could you have forgotten to turn it off?　　----- Yes, I _____.

[译文] --灯是亮着的。你可能忘记关灯了。　　--是呀，我可能忘了。

　 A. could 　 B. ought have

　 C. must 　 D. might have

[答案及简析] D。 情态动词加完成时态，才表示对过去的推测。

1681] -----Thank you for the great trouble you’ve had _____ me with my computer work.　-----That is nothing.

[译文] --十分感谢你帮做电脑工作。　　--没啥。

　 A. with helping 　 B. helping

　 C. to help 　 D. to have helped

[答案及简析] B。 have trouble doing sth. 麻烦，费劲做…。

1680] Professor Smith, many students want to see you. _____ they wait here or outside?

[译文] 史密斯教授，许多学生想见你，是让他们在这儿等呢，还是在外面等？

　 A. Do 　 B. Will

　 C. Shall 　 D. Would

[答案及简析] C。 shall用于一，三人称的疑问句中，表示征求意见或者提出建议。

1679] _____ books you may read, they should be of real value.

[译文] 无论你读什么书，它们都是有益处的。

　 A. Which 　 B. What

　 C. Whichever 　 D. Whatever

[答案及简析] D。 whichever指在一定范围内选择。