20. raining hard for 3 hours without stopping.21.A. It is　　　B. It was　　　C. It has beenD. I

发布时间：2020-08-16 06:15:00


20.     raining hard for 3 hours without stopping.
21.
A. It is　　　
B. It was　　　
C. It has been
D. It had been

网友回答

A. It is　　　
B. It was　　　
(答案→)C. It has been
D. It had been
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