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
If prices rise too high, the government has to do something _________ it.
#77944
A
stop
B
stopped
C
stopping
D
to stop
I ____ have been there, but I ____ not find the time.
#62724
A
could; must
B
must; could
C
should; could
D
should; would
---Where is Tom? ---He hasn’t come to school today. I think he be ill.
#74537
A
has to
B
should
C
may
D
need
— _______ we clean the classroom at once? — No, you _______. You _______ clean it after school.
#78132
A
Must; needn’t; may
B
Must; mustn’t; can.
C
Shall; can’t; must
D
Need; mustn’t; may
— The socks must be Linda’s.— No, they be. They’re too small for her.
#75913
A
mustn’t
B
may not
C
might not
D
can’t