问题
选择题
— I ______ have turned on the air conditioner at such a low temperature.
— No wonder you've got a cold. [ ]
A. shouldn't
B. couldn't
C. mustn't
D. needn't
答案
答案：A
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— I ______ have turned on the air conditioner at such a low temperature.
— No wonder you've got a cold. [ ]
A. shouldn't
B. couldn't
C. mustn't
D. needn't
答案：A