Chemical processes       in the treatment of materials for clothes         the environment badly in some countries nowadays.
#98247
A
involve;damaging
B
involved;damaged
C
involving;damage
D
involved;damage
推荐题目
Paul doesn’t have to be made ____. He always works hard.
#97004
A
learn
B
to learn
C
learned
D
learning
The class __________ 80 students is hard to manage.
#93034
A
making up of
B
consists of
C
consisting of
D
made up