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—Isn’t that Ann’s husband over there?
—No, it _______ be him—I’m sure he doesn’t wear glasses.?
A.can’tB.must not
C.won’tD.may not
A?
can’t be表示“不可能是”,对目前的事或存在的状态作出猜测。Mustn’t be表示“禁止,不准”,不表示猜测或判断。
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