1641] They _____ the house but found nobody in it.

[译文] 他们搜查了房屋但没有发现一个人在里面。

　 A. have searched 　 B. searched

　 C. searched for 　 D. were in seach for

[答案及简析] B。 search 及物动词，表示搜查什么地方或人。

1640] She can’t help _____ the house because she is cooking the meal.

[译文] 她不能帮助打扫房子因为她在做饭。

　 A. cleaning 　 B. to be cleaned

　 C. to clean 　 D. being cleaned

[答案及简析] C。 can’t help doing sth.禁不住；can’t help to dosth.不能帮助做什么。

1639] They stood there with their eyes wide _____, _____ what was happening.

[译文] 他们站在那儿，睁大着双眼，注视着发生了什么事。

　 A. opened; looking at 　 B. open; watching over

　 C. closed; looking at 　 D. open; to look for

[答案及简析] B。 open 形容词，表示状态；closed没有形容词表示状态就用过去分词表示。

1638] -----Oh, it’s you! I didn’t recognize you.　　-----I _____ my hair cut, and I _____ dark glasses.

[译文] --啊，是你呀！我没认出你来。　　--我刚理过发又带着一副墨镜。

　 A. had; was wearing 　 B. have had; am wearing

　 C. had; wore 　 D. have had; wear

[答案及简析] B。 情景中的时态题，对方没有认出来的原因是刚理过发，还带着墨镜，注意此题共有四句话，就用了四种时态。

1637] The naught boy _____to me that the hen which ____ there just now had _____ two eggs the day before.

[译文] 这个顽皮男孩对我撒谎说，躺在那儿的母鸡前些天下了两个蛋。

　 A. lied; lay; laid 　 B. laid; lay; lain

　 C. lied; laid; lain 　 D. laid; laid; laid

[答案及简析] A。 lie和lay的用法区别。

1636] When you come to the fence, you can see a notice _____ there saying "_____ the grass".

[译文] 当你来到栅栏处，你就会看见一个告示，上面写着："勿踏草地"。

　 A. putting up; keep off 　 B. put up; keep off

　 C. putting up; keep away 　 D. put on; keep out

[答案及简析] B。 put up搭建起；keep off the grass常用的标语"勿踏草地"。

1635] ----- Tom is not coming tonight.　　　----- But he _____!

[译文] --汤姆今晚不会来了。　　--但是他曾答应过的呀！

　 A. promises 　 B. promised

　 C. will promise 　 D. had promised

[答案及简析] B。 许诺的动作发生在来之前，故用过去时态。

1634] Not until the early years of the 19th century _____ what heat is.

[译文] 直到十九世纪初，人类才知道什么是热。

　 A. man did know 　 B. man know

　 C. didn’t know 　 D. did man know

[答案及简析] D。 not until 在句首，主句要部分倒装；man单数时，不加冠词，指人类。

1633] _____ he said so was quite _____.

[译文] 他这样说的话令人惊讶。

　 A. What; surprising 　 B. Why; surprising

　 C. That; surprised 　 D. What; surprised

[答案及简析] B。 surprising 令人惊讶的，表示特征。

1632] Keep your feet _____ while I fasten your shoes.

[译文] 我给你系鞋带时脚不要动。

　 A. quiet 　 B. silent

　 C. still 　 D. calm

[答案及简析] C。 still = without moving,不动。