__a noise just then?A.Have you heard B.Were you hearing C.Are you hearing D.Did you hear

分类: 作业答案 • 2021-12-03 12:05:13

问题描述：

__a noise just then?A.Have you heard B.Were you hearing C.Are you hearing D.Did you hear
请说明理由

答

D
根据then是“在那时”,用一般过去时.