---Sorry, Professor Smith. I didn't finish the assignment yesterday.---Oh, you have done it as yesterday was the deadline.
#87069
A
must
B
mustn't
C
should
D
shouldn't
推荐题目
Maybe if I_____ science, and not literature then, I would be able to give you more help.
#86597
A
studied
B
wouldstudy
C
hadstudied
D
wasstudying
---Look at these tracks. It _____ be a wolf.” ---Don’t be so sure. I think it _____ be a fox.
#87712
A
must; could
B
may; might
C
need; must
D
could; need
Water ____ be changed into vapour but it ____ be heated to its boiling point .
#89755
A
may ; can
B
can ; must
C
may ; needn''t
D
must ; may
You ___ go to the shop.There are quite a few eggs in the fridge.
#90306
A
don’t have to
B
have to
C
needn’t to
D
don;t need