-How long has the film been on?-___3:30.A.At B.About C.Before D.Since
问题描述:
-How long has the film been on?-___3:30.A.At B.About C.Before D.Since
答
因为是现在完成时,所以是自从3.30,用since,表示过去的一段时间持续到现在