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 suspect admitted _______________ the chemical in the lab before he killed his roommate.
#48952
A
to steal
B
stealing
C
stole
D
steal
In the old days, people lived in caves and they had to make a fire _________themselves warm.
#50642
A
to keep
B
keeping
C
keep
D
kept
My father wants me ______ computer games before finishing my homework.
#49103
A
not play
B
to play
C
to not play
D
not to play