With the effects of global warming, trees their leaves much later in the year.A．are losingB．have lostC．lostD．were losing 题目和参考答案——青夏教育精英家教网—

题目内容

With the effects of global warming, trees their leaves much later in the year.

A．are losing

B．have lost

C．lost

D．were losing

考查时态，指现阶段一直进行的动作用现在进行时态。句意：随着全球变暖的影响，在一年中一些树失去树叶比以前晚多了。故选A。

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