raining hard for 3 hours without stopping.A．It is B．It was C．It has beenD．It had been 题目和参考答案——青夏教育精英家教网—

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　　　　　　　raining hard for 3 hours without stopping.

A．It is　　　

B．It was　　　

C．It has been

D．It had been

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