We should think of ways to stop the waste from the factory _____ our living environment. 
#94851
A
being polluted
B
polluting
C
from being polluted
D
polluted
推荐题目
.He was about to leave ______the telephone rang; ______was from his mother.
#94010
A
when; that
B
before; which
C
when; it
D
before; this
I am not a little tired today after giving the room a thorough cleaning and I have never had ______today.
#92380
A
as a tiring day as
B
tiring as a day as
C
as tiring a day as
D
day as a tiring as
While watching television,         .
#93690
A
the doorbell rang
B
we heard the doorbell ring
C
there was someone knocking at the door
D
we heard the doorbell rung