806] The students _____ busily when Miss Brown went to get a book ____ in the office.

[译文] 学生在忙着做作业，这时Miss Brown去办公室拿她丢在那儿的一本书。

　 A. had written; left 　 B. were writing; has left

　 C. had written; had left 　 D. were writing; had left

[答案及简析] D。 第一个空表示动作正在进行；第二个空表示的动作发生在第一个动作之前。

805] People ______ the new TV play.

[译文] 人们对这部新的电视剧评价很高。

　 A. think high of 　 B. think well of

　 C. think poor of 　 D. think good of

[答案及简析] B。 think well/ highly of 对…评价很高。

804] Both the Summer and Winter Olypics _____ every four years.

[译文] 春冬两季奥运会都是每四年举行一次。

　 A. hold 　 B. are hold

　 C. are held 　 D. is held

[答案及简析] C。 主谓一致问题，both…and引起的短语做主语谓语用复数；此句的主语不能发出动作故用被动语态。

803] People are not allowed ______ freely at the meeting and they don’t allow _____ either.

[译文] 在会议期间不容许随便讲话；不许抽烟。

　 A. to talk; smoking 　 B. to talk; to smoke

　 C. talking; to smoke 　 D. talking; smoking

[答案及简析] A。 注意allow一词的用法：allow sb. to do sth. allow doing sth.。

802] Many of the sporta were the same _______ they are now.

[译文] 以前的许多运动和现在的一样。

　 A. from 　 B. with

　 C. as 　 D. of

[答案及简析] C。 the same …as 固定搭配，"和…一样"，表示类似。

801] His letters ______ well.

[译文] 他的来信从来是不通顺的。

　 A. never read 　 B. are never read

　 C. read never 　 D. never are read

[答案及简析] A。 此处的read是不及物动词，表示状态一般和well连用。

800] Like the Olympics, the World Cup takes place _____ years.

[译文] 像奥运会一样，世界杯每四年举行一次。

　 A. every four 　 B. each fourth

　 C. each four 　 D. every fourth

[答案及简析] A 每隔….的表达法有：　every +基数词 +复数名词；　every +序数词 +单数名词。

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799] I _____ her, but I _____ her.

[译文] 我听说过她，但不认识她。

　 A. know; don’t hear of 　 B. hear; don’t know

　 C. have known; haven’t heard of 　 D. have heard of; don’t know

[答案及简析] D。 hear of 听说；know认识。

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。