31. We should think of ways to stop the waste from the factory _____ our living environment.
#81053
A
being polluted
B
polluting
C
from being polluted
D
Polluted
推荐题目
This is the second letter that he has ___ him recently.
#82258
A
heard from
B
received from
C
heard of
D
got
—We didn’t find Smith attending the lecture.—No one _______ him about _______ a lecture the following day.
#72944
A
told, there to be
B
had told, there to be
C
told, there was
D
had told, there being
—What about the protection?—Let’s keep the surface dirt by putting a cover over it.
#71652
A
far from
B
free from
C
apart from
D
away from
Don’t be so discouraged. If you ________such feelings, you will do better next time.
#82094
A
carry on
B
get back
C
break down
D
put away