All of us must do_______ to help protect the environment，or we will have more hazy weather雾霾天气.
#74653
A
something useful
B
anything useful
C
useful something
D
useful nothing
推荐题目
—How many English words do you think I should know?—As many as you ______. Then you will find reading quite easy.
#75435
A
will
B
must
C
can
D
might
—What do you think of Peter?—He ______ be really difficult to get along with even though he’s a nice person in general.
#62783
A
shall
B
should
C
must
D
can
— Must I go to medical school and be a doctor like you，Dad?— No，you__________，son．You’re free to make your own decision．
#75418
A
can’t
B
mustn’t
C
shouldn’t
D
needn’t
—Could you help me write the annoying composition? —No! As a student, you _____ do it by yourself.
#62739
A
shall
B
will
C
can
D
may
The work is too hard for him. He__________ finish it on time.
#77570
A
can't
B
mustn't
C
shouldn't
D
needn't