15、―― We did not see him at the lecture yesterday. 

―― You _____ him, since I went to an international conference with him.

A. mustn’t have seen                                  B. can’t have seen

C. couldn’t see                                          D. needn’t have seen

14、Strawberries can, of course, be frozen but they taste best when bought and eaten _____.

A. fresh                 B. freshly                     C. more freshly              D. fresher

13、It is one thing to enjoy listening to good music, but it is quite _____ to perform skillfully yourself.

A. any other           B. another              C. other thing         D. some other             

12、 If you read _____ the lines, you will know that they don’t really welcome us to attend the meeting.                                                              

A. within               B. in                      C. between            D. at

11、在過去的三十年里，中國人民以巨大的勇氣、信心和創(chuàng)造力取得了了不起的成就，這令整個(gè)世界震驚（…, which … ）

二、選擇題

（每空？ 分，共？ 分）

10、人們普遍認(rèn)為學(xué)會(huì)合作有利于問題的解決。 (It … )  

9、夏天還沒到呢，孩子們就迫不及待地想游泳了。 （wait）

8、一旦你承諾要做某事， 就要守信用。 （once）

7、一個(gè)人年輕時(shí)多學(xué)點(diǎn)是有好處的。 (beneficial)

6、考試時(shí)一定要仔細(xì)。 （in）