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
–Look at that red bike, it _____ belong to you. I have seen you ride it. --But it ____ be mine. Mine is broken. I am having it repaired.
#75657
A
may, can’t
B
must, mustn’t
C
may, mustn’t
D
must, can’t
You can not imagine that a well-behaved gentleman _______be so rude to a lady.
#63350
A
might
B
need
C
should
D
would
You’d better _____ too much fried chicken. It’s not good for your health .
#76037
A
not to eat
B
don’t eat
C
not eat
D
to not eat
—Listen ! Helen is singing in the next room.—It __________ be Helen. She is in Tianjin now.
#76500
A
can’t
B
mustn’t
C
may not
D
shouldn’t
The river smells terrible. People_______ dirty things into it .
#63313
A
must stop to throw
B
must stop from throwing
C
must be stopped to throw
D
must be stopped from throwing