The water in the river nearby will be dirtier than before if nothing __________.
#52543
A
has done
B
will be done
C
is done
D
was done
推荐题目
It’s time for supper now．Let’s__________ it．
#54658
A
stop having
B
stop to have
C
to stop to have
D
stopping to have
It’s not polite to make fun of others when they are in trouble .
#58615
A
have fun
B
enjoy fun
C
laugh at
D
look for fun
_________that river ________very clean?
#54641
A
Did ;use to
B
Did ;use to be
C
Does ;used to
D
Does ;use to be