798] I’ll be back _____ 5 o’clock tomorrow afternoon.

[译文] 我将在明天下午大约5点钟的时候回来。

　 A. about 　 B. around

　 C. until 　 D. for

[答案及简析] B。 about是副词，表示具体的时点要加介词at；around是介词，大约的意思。

797] The picture ____ on the wall is painted by my nephew.

[译文] 挂在墙上的画室我的侄子画的。

　 A. having hung 　 B. hanging

　 C. hangs 　 D. being hung

[答案及简析] B。 hang是一个表示状态的动词，不用被动语态。

796] Ahead of me I saw a woman _____ I thought was my aunt.

[译文] 我想，在我前面的那个妇女　是我的婶子。

　 A. who 　 B. whom

　 C. of whom 　 D. whose

[答案及简析] A。 定语从句中加入了一个插入语I thought。

795] I’m sure the red team will ______ the game.

[译文] 我肯定红队将赢得这场比赛。

　 A. win 　 B. beat

　 C. defeat 　 D. succeed

[答案及简析] A。 beat, defeat的宾语是人或者团体；succeed 后面要接介词in；win的宾语是物。

794] The Canadian friends have given us a lot of books, few of _____ a bit difficult for us.

[译文] 这些加拿大朋友送给我们许多书，其中的一些对我们来说太难了。

　 A. them are 　 B. that is

　 C. which are 　 D. which is

[答案及简析] C。 定语从句，few引导的做主语，谓语应该是复数。

793] Would you like to _____ us in our discussion?

[译文] 你想参加我们的讨论吗？

　 A. take part in 　 B. join

　 C. taking part in 　 D. joining

[答案及简析] B。 would you like to 后面跟动词原形；take part in ，参加某项活动；join和某人一道做…。

792] It’s said that corn was grown a lot in Tibet _______.

[译文] 据说在17世纪西藏中有大量的玉米。

　 A. in 17th century 　 B. in the 17th century

　 C. in 17 century 　 D. in the 17 century

[答案及简析] B。 固定表达。

791] Rather than _____ on a crowded bus, he always perfers _____ a bike.

[译文] 他总是宁愿骑自行车而不愿挤公共汽车。

　 A. ride; ride 　 B. riding; ride

　 C. ride; to ride 　 D. to ride; riding

[答案及简析] C。 prefer to do sth. rather do sth.结构。

790] As I became older, I came to like ____ things.

[译文] 随着我年龄的增长，我越来越喜欢纯朴的东西。

　 A. more and more simple 　 B. more simpler and simpler

　 C. much simpler ans simpleer 　 D. more and more simpler

[答案及简析] A。 比较级 and 比较级， 表示"越来…越来…" 。

789] The doctor was reading an article ______ the class.

[译文] 医生在把一篇文章读给学生听。

　 A. for 　 B. by

　 C. towards 　 D. to

[答案及简析] D。 read sht. to sb. 把…读给…听。to表示对象；如果用介词for的话就是为…而读，表示目的。