—You didn't wait for Mr. Smith last night, did you?—Yes, but we ________. He didn't return home at all.
#87275
A
don't have to
B
needn't have
C
didn't need to
D
should have
推荐题目
Perce Blackborow and his companions stayed on Elephant Island for six months before rescue came, so they ________ a lot of difficulties.
#87871
A
must go through
B
may go through
C
must have gone through
D
could have gone through
According to the air traffic rules, you______switch off your mobile phone before bearding.
#89102
A
may
B
can
C
would
D
should
Zhanglin was lost in computer games during his last year in high school, otherwise he _____ a student at Beijing University.
#86640
A
would have been
B
can be
C
has been
D
had been
My suggestion is that a plan for study ____ at first.
#88022
A
will be made
B
be made
C
was made
D
be should made