____ a noise a monent ago?A.Have you heard B.Were you hearing C.Did you hear D.Are you hearing
问题描述:
____ a noise a monent ago?A.Have you heard B.Were you hearing C.Did you hear D.Are you hearing
答
C a monent ago是一般过去时的时间状语
答
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
答
选C.Did you hear
答
C.Did you hear
a monent ago 是一般过去时的时间状语