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
---What should I do, doctor?---_____healthy, you should take more exercise.
#48538
A
Keep
B
Keeping
C
To keep
D
Having kept
It’s very hard ___________the swimming pool.
#50813
A
to swim across
B
to swim cross
C
swim across
D
swim cross
On her way home, Lucy saw a thief ______ in a shop. She stopped ______ 110 at once.
#49517
A
steal; call
B
to steal; call
C
stealing; to call
D
stealing; calling