Mother, where__ you put my cell-phone after you used it?选什么,
Mother, where__ you put my cell-phone after you used it?选什么,为什么呢?
Mother,where __ you put my cell-phone after you used it? I ___ it anywhere.
A, have; haven't found B. had; didn't find
C. did; haven't found D. have; didn't find
这是一道时态题,不知道该选什么,怎么理解呢
放和找不到,都是发生在过去,哪个该表示有影响,哪个该表示没影响,怎么判断呢