—You                      praise your son. He works harder than before. —Thanks, I will.
#74700
A
should
B
can
C
may
D
must
推荐题目
-Must I use both hands?-Yes, you _____.
#74704
A
must
B
need
C
should
D
can
Thomas _____ a soldier, for he is much too short.
#63130
A
needn’t be
B
should be
C
may be
D
can’t be
—_________ I take some photos in the hall, sir?  —No, you _________.
#74914
A
Can, needn't
B
Must, mustn't
C
Could, won't
D
May, mustn't