题目内容

Beijing ________ a lot in the past ten years. Now it has become one of the biggest modern ________ in the world.

[  ]

A.changes; cities
B.changed; city
C.has changed; cities
D.had changed; cities

答案:C
解析:

点拨:in the past ten years是现在完成时的标志;one of后跟名词复数。


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