25. – Tom, it's too late. Our son ________ be back.
– Don't be anxious. I dare say he ________ have some extra work to do.
A．can; must B．will; mightC．should; mustD．must; may
C

25．C(解析：考查情態(tài)動(dòng)詞。should "按理說(shuō)，應(yīng)該” must “肯定”，選C。)
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