1.Before a problem can be solved,it must be obvious______the problem itself is.( )
A. | what | B. | that | C. | which | D. | why |
20.One third of the country ______covered with trees and the majority of the citizens_______black people.( )
A. | is are | B. | is is | C. | are are | D. | are is |
19.When asked about their opinion about the schoolmaster,many teachers would prefer to see him step aside younger men.( )
A. | in terms of | B. | in need of | C. | in favor of | D. | in praise of |
17.--I spent two weeks in London last summer.
--Then you must have visited the British Museum during your stay,____ you?( )
--Then you must have visited the British Museum during your stay,____ you?( )
A. | mustn't | B. | haven't | C. | didn't | D. | hadn't |
15.China recently tightened its waters controls near the Huangyan Island to prevent Chinese fishing boats from ______in the South China Sea.( )
A. | attacking | B. | having attacked | ||
C. | being attacked | D. | having been attacked |
14.-When did the computer crash?
-This morning,while I ______ the reading materials downloaded from some websites.( )
-This morning,while I ______ the reading materials downloaded from some websites.( )
A. | have sorted | B. | was sorting | C. | am sorting | D. | had sorted |
13.Do you think this shirt is too tight ____ the shoulders?( )
A. | at | B. | on | C. | to | D. | across |
12.George said that he would come to school to see me the next day,but he ______.( )
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A. | wouldn't | B. | didn't | C. | hasn't | D. | hadn't |