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Oh, it’s so cool in the house. You have turned on the air-conditioner, haven’t y

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Oh, it’s so cool in the house. You have turned on the air-conditioner, haven’t y

Oh, it’s so cool in the house. You _______ have turned on the air-conditioner, haven’t you?

       A.  should            B. might                       C. must                 D. can

试题答案

C