We must do everything we can          waste water from running into rivers.
#48694
A
keep
B
kept
C
to keep
D
keeping
推荐题目
You’d better ________ too much meat. You are too fat.
#50936
A
eat
B
not eat
C
not to eat
D
don’t eat
Do you have ____________ to say about your family? 
#51128
A
else anything
B
else something
C
anything else
D
something else
The city in Shandong has become famous__________kites.
#49347
A
to making
B
for making
C
make
D
makes
They thought __________ important to look right and left when ________ the road.
#48965
A
it’s; cross
B
it; to cross
C
it; crossing
D
it was; to cross