A survey has shown that 40% of those killed in traffic accidents _____ if they had been wearing seat belts.
#62781
A
should have been saved
B
must have been saved
C
need have been saved
D
could have been saved
推荐题目
The boss has given everyone a special holiday, so we ________ go to work tomorrow.
#62963
A
can’t
B
mustn’t
C
needn’t
D
shouldn’t
---Look at that girl! Is that Susan?---No , it _______ be her. She has gone back to her hometown.
#74215
A
mustn’t
B
can’t
C
must
D
might
Personally, the job as a teacher _____ be challenging, for I sometimes _____ deal with some smarter but less diligent students.
#62557
A
can; have to
B
may; can
C
has to; may
D
ought to; must