Chemical processes       in the treatment of materials for clothes         the environment badly in some countries nowadays.
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A
involve;damaging
B
involved;damaged
C
involving;damage
D
involved;damage
推荐题目
There were two roads ______ to the station. 
#93160
A
lead
B
led
C
leading
D
to lead
 Although in a hurry, Wilson ______.
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A
couldn’t stop walking
B
couldn’t help the stranger
C
stopped to help the stranger
D
didn’t answer the stranger