问题描述:
I told you not to be late again,John,__I?A.do B.did C.don't D.didn't.前面有 not 为什么不用 didn’t.
A.do B.did C.don't D.didn't 请详细说明.
A.do B.did C.don't D.didn't 请详细说明.
问题解答:
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