问题补充:
25. – Tom, its too late. Our son be back.
– Don be anxious. I dare say he have some extra work to do.
A. can; must
B. will; might
C. should; must
D. must; may
答案:
A. can; must
B. will; might
(答案→)C. should; must
D. must; may
解析:
25.C(解析:考查情态动词。should 按理说,应该” must “肯定”,选C。)