Beijing a lot over the years. Now it has become one of the biggest in the world.A．changes; citiesB．changed; cityC．has changed; citiesD．changed; cities 题目和参考答案——青夏教育精英家教网—

Beijing ________ a lot over the years. Now it has become one of the biggest
______ in the world.

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

解析试题分析：句意：这些年北京变化很多。现在它已经成为世界最大的城市之一。与时间短语over the years.连用时，用现在完成时。由one of来修饰时，后面用名词的复数形式。故选C。
考点：考查时态的用法。

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