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
The old man was too poor ___________a room _________ .
#48825
A
have; to live
B
to have; live
C
to have; to live
D
to have; to live in
The purpose of new inventions is _______ life more difficult, but to make it easier.
#48430
A
not make
B
not making
C
not to make
D
do not make
—We should do what we can ________ the endangered animals.—Yes, it’s our duty_________ them.
#48378
A
save; to protect
B
save; protect
C
to save; protect
D
to save; to protect