Our playground is not so tidy and beautiful as before, students must ____ dirty things on it.
#74989
A
be stopped to throw
B
be stopped throwing
C
stop to throw
D
stop from throwing
推荐题目
Some aspects of a pilot’s job__________ be boring, and pilots often ________ work at inconvenient hours．
#63540
A
can; have to
B
may; can
C
have to; may
D
ought to; must
—Mr. Wang, must I come again to clean the window on Sunday morning?—No, you _____ . I have asked others to do it.
#75558
A
don’t have to
B
mustn’t
C
can’t
D
shouldn’t
—Mother, I climbed up to that tall tree and picked this big apple. —Jesus! You______ down and hurt yourself.
#62619
A
might have fallen
B
might fall
C
must have fallen
D
must fall
It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
#62254
A
couldn’t
B
may
C
should
D
needn’t
Today is Wednesday. He _______be at home. He _______be at school.
#75246
A
can't; can
B
can't; must
C
mustn't; must
D
mustn't; can