It ____ be our headmaster. He has gone to Beijing.
#88070
A
mustn’t
B
won’t
C
may not
D
can’t
推荐题目
A foreign language like English is difficult to learn, so you ____________ work too hard.
#88307
A
can’t
B
must
C
shouldn’t
D
ought to
. I ____ to the top of the tree, but I fell off it and hurt my leg.
#88189
A
must have climbed
B
was able to climb
C
could have climbed
D
should have climbed
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
The president desires that you _________ him next week.
#86989
A
visit
B
will visit
C
to visit
D
visiting
—What do you think we can do for our aged parents？—You do anything except that you visit them as often as possible.
#89841
A
don’t have to
B
oughtn’t to
C
mustn’t
D
shouldn’t