I sent an MP4 to Alice by mail just now.You___so.She is coming to_英语解答

I sent an MP4 to Alice by mail just now.You___so.She is coming tomorrow
A.needn't do
B.needn't have done
C.musn't do
D.musn't have done

人气：447 ℃　时间：2019-10-26 04:29:12

解答

B
needn't have done sth 表示过去没必要做什么,而事实上已经做了