—May I smoke here ?—If you ____, choose a seat in the smoking section. 
#90273
A
should
B
could
C
may
D
must
推荐题目
She ______ find any ______ employment.
#88074
A
wasn’t able to; normal
B
shouldn’t; often
C
couldn’t; regular
D
mightn’t; ordinary
When a pencil is partly in a glass of water, it looks as if it ______.
#90526
A
breaks
B
has broken
C
were broken
D
had been broken