问题描述：
---Why did you leave without a word of warning to John?
---But what__________otherwise?He never likes to listen to me.
A.could I have done B.must I have done C.could I do D.should I do
---But what__________otherwise?He never likes to listen to me.
A.could I have done B.must I have done C.could I do D.should I do
问题解答：
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