题目内容
—Will you please answer the door? It ________ be your sister.
—Sorry, I ________. I’m feeding the rabbit.
A. must; mustn’t B. may; can’t C. will; can’t D. must; needn’t
B
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题目内容
—Will you please answer the door? It ________ be your sister.
—Sorry, I ________. I’m feeding the rabbit.
A. must; mustn’t B. may; can’t C. will; can’t D. must; needn’t
B