To be on the safe side, we should fill up the tank now, because we ______ run out of gas on the way.
#89113
A
could
B
might
C
would
D
must
推荐题目
The students ______ to write English words carefully from the beginning. 
#87647
A
be trained
B
should be trained
C
train
D
to train
But for the heavy traffic, the police ___ the thieves who tried to escape in the stolen car. 
#87591
A
would not catch
B
couldn’t have caught
C
haven’t caught
D
couldn’t catch
Jack _______ yet last night, otherwise he _______ me.
#89893
A
mustn’t have arrived; must have phoned
B
can’t have arrived; would have phoned
C
may have arrived; need have phoned
D
shouldn’t have arrived; can have phoned