771] You can’t _____ until tomorrow morning after the blood examination.

[译文] 直到明天上午查血后，你才可以吃喝。

　 A. not only eat but also drink 　 B. either eat or drink

　 C. neither eat nor drink 　 D. both eat and drink

[答案及简析] B。 该句中有否定词not，就只有用either …or…结构。

770] We’re trying our best to get our English _____.

[译文] 我们打算尽力提高我们的英语。

　 A. improved 　 B. to improve

　 C. improves 　 D. improving

[答案及简析] A。 过去份词作宾补，表示被动和动作的完结。

769] All the preparations for the task ______, and we’re ready to start.

[译文] 这项工作的所有准备已经完成，我们准备马上开始。

　 A. completed 　 B. complete

　 C. had been complete 　 D. have been completed

[答案及简析] D。 时态题，从后一句话中我们可以判断期那一句应该是现在完成时态。

768] Though some foreign scientists had a ______ opinion of his new invention, his fellow workers never thought ____ of it.

[译文] 尽管有些外国科学家对他的新发明评价很高，他的同事却对此评价不高。

　 A. highly; low 　 B. low; high

　 C. high; highly 　 D. poor; highly

[答案及简析] C。 第一个空该用形容词；第二个空该用副词。Have a high opinion of, think highly of对…评价高。

767] _____ people who buy IBM PC686 is larger than ever before.

[译文] 买IBM PC686电脑的人数比以前任何时候的人都多。

　 A. A lot of 　 B. A number of

　 C. A great many 　 D. The number of

[答案及简析] D。 表达人数的多少用the number of。

766] The poor boy is in danger. We should do all we _____ help him out.

[译文] 那个可怜的孩子处于危险中。我们应该尽力帮助他。

　 A. can do 　 B. can to

　 C. can to do 　 D. can

[答案及简析] B。 这是一个常见结构，补充完整就是：We should do all we can do to help him out。

765] Nobody but you _____ able to sing that American song.

[译文] 除了你没有人能唱好这首美国歌曲。

　 A. are 　 B. were

　 C. is 　 D. can be

[答案及简析] C。 本句的主语是nobody，所以谓语动词用单数。

764] -----Have you _____ everything ready for the meeting? ----- Not yet, we need ______.

[译文] -- 你做好了一切会议的准备了吗？　--没有，还需要三把椅子。

　 A. got; another three chairs 　 B. got; more three chars

　 C. prepared; other three chairs 　 D. prepared; three another chairs

[答案及简析] A。 get sth. ready 做好了一切准备；another three chairs = three more chairs 。

763] It is he, not you, _____ right.

[译文] 是他对，而不是你对。

　 A. who are 　 B. who is

　 C. which is 　 D. that are

[答案及简析] B。 先行词是he，是单数而不是复数。

762] Those _____ know the answer put up your hands.

[译文] 那些知道答案的请把手举起来。

　 A. who 　 B. which

　 C. that 　 D. whom

[答案及简析] A。 先行词为those时，关系代词用who。