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
--- Mary’s got crazy and has been sent to the mental hospital. Did you tell her boss about that?--- Yes, but I _____ her husband first.
#62825
A
should have told
B
shouldn’t have told
C
must have told
D
needn’t have told
—Must I hand in my homework now， Mr.Smith?—No，you ________.
#74206
A
can’t
B
shouldn’t
C
wouldn’t
D
needn’t
-_____you sing and dance at this late hour of the night?-Sorry, I will stop right now.
#62918
A
May
B
Shall
C
Will
D
Must
The winner of the race is tall and thin; he _______ be my friend, Mike, who is short and fat.
#63175
A
might
B
mustn’t
C
can’t
D
should
— Jack, take more clothes when going camping. It ______ be very cold in the mountains.— Thank you, Mum. I will.
#63500
A
can
B
should
C
shall
D
must