—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”，對目前的事或存在的狀態(tài)作出猜測。Mustn’t be表示“禁止，不準(zhǔn)”，不表示猜測或判斷。
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