We must do everything what we can _______ water and paper.
#48856
A
save
B
saving
C
to save
D
saved
推荐题目
When shopping, keep your eyes ______for those energy-saving machines.
#49678
A
opened
B
open
C
to open
D
to be open
Parents always ask their children ___ all kinds of difficulties bravely.
#51262
A
face
B
facing
C
to face
D
faced
—IsTomin the next room?—Well,it’s hard tosay.ButIheardhim loudly whenIpassed by justnow.
#50414
A
speak
B
tospeak
C
spoken
D
speaking