They when the teacher came in.A. talk B. are talkingC. to talkD. were talking

发布时间：2020-08-22 14:27:12

They     when the teacher came in.
A. talk
B. are talking
C. to talk
D. were talking

网友回答

A. talk
B. are talking
C. to talk
(答案→)D. were talking
解析：句意：当老师进来时，他们正在说话。结合语境可知主句描述的是过去某时正在进行的动作，故用过去进行时态。选D。
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