问题补充:
--- It’s so late. Our son be back!
--- Don’t worry. 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:考查情态动词:句意:--很晚了,我儿子应该回来了!--别担心,我敢说,他一定有很多作业要做。第一空填should表示“按道理应该”,can是“能够”,will是“愿意”,must是“必须”,第二空填must表示推测,“一定是”might和may是“可能”,选C。