We’ll do what we can _________ our environment.
#49518
A
protect
B
to protect
C
be protected
D
be protecting
推荐题目
When I got out of the room, I found someone _____________ the tree.
#50126
A
climbing
B
to climb
C
climb
D
climbs
At the end of the road, you can see my new house ______ a window ______.
#48998
A
with; opened
B
with; open
C
has; opened
D
has; open
My father enjoys ____ very much. He often practises _____ in summer.
#49867
A
to swim; swimming
B
swimming; swimming
C
to swim; to swim
D
swimming; to swim
—I worry about ______ enough time and energy to finish that job.—Don’t worry about it. I’ll help you!
#50063
A
not having
B
not have
C
didn’t have
D
don’t have
Don’t keep the boy __________ in the rain. He will fall ill.
#50356
A
stand
B
to stand
C
standing
D
from standing