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You ________ be hungry already — you had lunch only two hours ago!
A．wouldn’tB．can’tC．mustn’tD．needn’t
B

試題分析：A. wouldn’t不會 B. can’t不可能         C. mustn’t 禁止        D. needn’t沒有必要；句意：你不可能已經餓了，兩小時之前才吃過午飯。故選B
點評：情態(tài)動詞是高考的熱點，can’t表示不可能，can用于肯定句中表示理論上的可能性，情態(tài)動詞除了表推測外，還可以表達另外的意思，如must理解為必須，由這個詞所開頭的問句，肯定回答用Yes,you must.否定回答用No,you needn’t或者是No,you don’t have to.注意不用mustn’t，因為mustn’t表示例行禁止的含義。
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