题目内容
—Why did you leave without a word of warning to Robert?
—But what _______ otherwise? He never likes to listen to me.
—But what _______ otherwise? He never likes to listen to me.
[ ]
A. could I do
B. could I have done
C. must I have done
D. should I do
B. could I have done
C. must I have done
D. should I do
B
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