Some aspects of a pilot's job be boring, and pilots often work at inconvenient hours．
#63217
A
can ; have to
B
may ; can
C
have to; may
D
ought to; must
推荐题目
－Thank you for your gift. －________________
#77112
A
The same to you.
B
You’re welcome.
C
Thank you.
D
Good idea.
—I think her dress comes from the 1970s.—It_________ be from that time. It looks so modern on her.
#76462
A
mustn’t
B
can’t
C
won’t
D
wouldn’t
No matter how healthy you _____be，you need to consult a doctor from time to time.
#63150
A
should
B
will
C
must
D
may
Boys, you ______ be sitting in this room. It is for your teachers only.
#76759
A
shouldn’t
B
don’t have to
C
won’t
D
needn’t
People ______always be careful with fire， or it can be dangerous.
#76425
A
can
B
needn’t
C
must
D
shouldn’t