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
--- It’s so late. Our son______ be back!--- Don’t worry. I dare say he ______ have some extra work to do.
#62953
A
can; must
B
will; might
C
should; must
D
must; may
---The book _____ be Tom’s.---No, it _____ be his. There’s a name on the book. It’s Jim’s.
#74804
A
must; mustn’t
B
may; mustn’t
C
can; can’t
D
must; can’t
You _________ drive so fast, for we have enough time to arrive at the station.
#74224
A
can't
B
mustn't
C
needn't
D
shouldn't
— 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
—You needn’t take an umbrella.It isn’t going to rain.—Well，I don’t know.It________do.
#62302
A
might
B
need
C
would
D
should