题目内容
—Look! A book is on the floor. Whose is it?
—It ______be Rick's. It has his name on it.
—It ______be Rick's. It has his name on it.
A.mustn't | B.can't | C.must | D.need |
C
考查情态动词的用法。mustn’t“禁止;不要”;can’t“不可能”;must“一定”;need“必要”。由下文句意“在上面有他的名字”可知,这本书一定是里克的。故选C。
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