for five minutes; why don’t they come? A. am callingB. calledC. was callingD. have been

发布时间：2020-08-17 14:28:59

       for five minutes; why don’t they e?
A. am calling
B. called
C. was calling
D. have been calling

网友回答

A. am calling
B. called
C. was calling
(答案→)D. have been calling
解析：用现在完成进行时表示持续到现在的一段时间。
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