____ a noise a monent ago?A.Have you heard B.Were you hearing C.Did you hear D.Are you hearing

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____ a noise a monent ago?A.Have you heard B.Were you hearing C.Did you hear D.Are you hearing
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____ a noise a monent ago?A.Have you heard B.Were you hearing C.Did you hear D.Are you hearing
____ a noise a monent ago?A.Have you heard B.Were you hearing C.Did you hear D.Are you hearing

____ a noise a monent ago?A.Have you heard B.Were you hearing C.Did you hear D.Are you hearing
选C.Did you hear

C.Did you hear
a monent ago 是一般过去时的时间状语

C 后面有具体的过去时间,就是问你过去有没有听到声音,所以用一般过去式

C a monent ago是一般过去时的时间状语