( c )24.______ TV at that time?A.Did you watch B.Have you watched C.Were you watching

题目

( c )24.______ TV at that time?A.Did you watch B.Have you watched C.Were you watching
这题答案选c,但为什么用过去进行时,而不用一般过去时?
at that time 用在什么时态。什么时候用过去进行时

答案

at that time 是过去具体时间,这是过去进行时的标志词 标志词还有,at three yesterday等
一般过去时是过去的某一时间例如,yesterday,last year