1718] Smith allowed his son _____ the meat _____ the dog.

[译文] 史密斯允许他的儿子用肉喂他的狗。

　 A. to feed; on 　 B. to feed; to

　 C. feed; to 　 D. feed; on

[答案及简析] B。 allow sb. to do sth. 允许…做…；feed sth. to sb.拿…喂…。

1717] When I got home, my parents were _____ out to _____.

[译文] 我回到家时，父母都出去买东西去了。

　 A. all; have shopping 　 B. both; do some shopping

　 C. all; go to shop 　 D. both; have shopping

[答案及简析] B。 父母只有两个；后面不定式表示目的。

1716] In Australia, he made a lot of friends _____ English well to make himself _____.

[译文] 在澳大利亚，他交了很多朋友学英语，想使人家能听懂自己讲的话。

　 A. learned; understood 　 B. learning; understand

　 C. to learn; understood　　 D. to learn; understand

[答案及简析] C。 不定式表示目的；make 加反身代词的后面一般跟过去分词。

1715] The teacher will come to explain ____.

[译文] 老师会来给我们解释这个问题的。

　 A. us for the problem 　 B. for us the problem

　 C. the problem to us 　 D. us the problem

[答案及简析] C。 explain sth. to sb.给某人解释什么。

1714] His father used _____ he had to buy him a computer.

[译文] 父亲用了他所有的钱给他买了一台电脑。

　 A. what that 　 B. all that

　 C. what 　 D. that

[答案及简析] C。 主句中缺宾语同时从句中缺宾语，用what引导。

1713] ----- _____ have you been in Guilin?　　----- Three weeks.

[译文] --你在桂林呆了多久？　　　--三周。

　 A. How soon 　 B. How long

　 C. How far 　 D. How often

[答案及简析] B。 how soon表示速度；how long 表示一段时间；how far 表示距离；how often表示频率。

1712] ____, mother will wait for him to have dinner together.

[译文] 无论他回家多晚，妈妈总是等着他回家一道吃晚饭。

　 A. However late is he 　 B. However he is late

　 C. However is he late 　 D. However late he is

[答案及简析] D。 however 修饰副词late,后面应该是一个陈述语序。

1711] If you want to change for a double room, you’ll have to pay _____ $ 15.

[译文] 如果你想换一个双人房间，你得再加15美元。

　 A. another 　 B. other

　 C. more 　 D. each

[答案及简析] A。 另外再加用another 表示。

1710] I’m sure _____ you said is wrong.

[译文] 我肯定你所说的话是错的。

　 A. that what 　 B. that

　 C. which 　 D. all what

[答案及简析] A。 that 引导宾语从句；what引导主语从句，作从句的主语。

1709] His answer _____ us by surprise.

[译文] 他的回答使大家大吃一惊。

　 A. took 　 B. caught

　 C. puzzled 　 D. shocked

[答案及简析] A。 take sb. by surprise使…大吃一惊。