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
Living in a fast-paced world, we get left behind if we stop learning.
#62355
A
should
B
dare
C
may
D
need
--- Have you decided which club to join?--- Not yet. I __________ go to the Music Club.
#74407
A
must
B
may
C
need
D
should
—Where did you meet him?—I met him on a number eleven bus, if you know.
#63394
A
can
B
must
C
shall
D
may
I have two brothers. One is a teacher, _________ is a doctor.
#78051
A
another
B
other
C
others
D
the other
--- May I go now? --- No. You ______________ let the teacher know first.”
#76273
A
need
B
must
C
can
D
may