问题

I sent him the dictionary by mail this morning.—You ______ that, for he’s coming tomorrow morning.[ ]

A: needn't have done
B: didn't have to do
C: needn't do
D: mustn't do

正确答案是：

同类题型

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have been agreat _____ to my parents in those hard days, for I never failed to live up totheir expectations