1530] ----- We always get home late for supper. ----- You are right. So we _____ be late this time.

[译文] --我们总是回家很晚吃晚饭。　　　--是呀，所以这次绝不迟到。

　 A. needn’t 　 B. mustn’t

　 C. don’t have to 　 D. don’t need to

[答案及简析] B。 mustn’t 绝不，语气十分坚决。

1529] The enemy came and set _____ all the houses.

[译文] 敌人来了，放火烧了房屋。

　 A. a fire to 　 B. fire to

　 C. fire on 　 D. the fire on

[答案及简析] B。 set fire to 放火烧…。

1528] There is no doubt _____ man will conquer nature some day.

[译文] 毫无疑问，总有一天人类将征服自然。

　 A. whether 　 B. have been

　 C. which 　 D. that

[答案及简析] D。 that 引导的是同位语从句，表示doubt的内容。

1527] The secretry worked late into the night, _____ a long speech for the president.

[译文] 秘书工作到深夜，为总统起草一个长篇演讲。

　 A. to prepare 　 B. preparing

　 C. prepared 　 D. was preparing

[答案及简析] B。 现在分词短语表示伴随。

1526] I’m pleased _____ your success.

[译文] 我对你的成功表示满意。

　 A. in 　 B. over

　 C. on 　 D. with

[答案及简析] D。 be pleased with / at / aboutsth. 对表示满意/高兴。

1525] ----- Do you know our town at all?　　　----- No, this is the first time I _____ here.

[译文] --你了解我们城市吗？　　　--不了解，这是我第一次到这儿来。

　 A. was 　 B. have been

　 C. came 　 D. am coming

[答案及简析] B。 在It is the first time that….句型中，从句的时态一般是完成时态。

1524] It _____ be Jack who broke the windows. It _____ be Tom who did it.

[译文] 不可能是Jack打破窗子。一定是Tom干的。

　 A. mustn’t; must 　 B. needn’t; can

　 C. can’t; must 　 D. may not ; can

[答案及简析] C。 当表示可能性推测时，一般用can或can’t。

1523] You’d better open the window and let _____ some fresh air.

[译文] 你最好把窗户打开，让新鲜空气进来。

　 A. into 　 B. out

　 C. in 　 D. to

[答案及简析] C。 let in 让…进来。

1522] Upon graduation he asked to be sent to where _____ needed.

[译文] 刚一毕业，它就要求把自己分配到最需要的地方去。

　 A. he is most 　 B. he needed

　 C. he is mostly 　 D. is he mostly

[答案及简析] A。 宾语从句应该用陈述语序。

1521] Where is my pen? I _____ it.

[译文] 我的钢笔哪儿？我一定把它丢了。

　 A. might lose 　 B. would have lost

　 C. should have lost 　 D. must have lost

[答案及简析] D。 情态动词加完成时态，表示对过去发生的事的推测。