42. –Sometime is knocking at the
door. Who ______ it be?
--It
______ be Tom. He is still in the school.
A. can; can’t B. can;
mustn’t C. might;
could D. might; may
第十一节:情态动词
1-5 CADCB 6-10 ADCDC 11-15 BDDCD 16-20 DAACB
21-25 BACAD 26-30 CCDBD 31-35 CDCDC 36-42 BBDCDBA