Chemical processes in the treatment of materials for clothes the environment badly in some countries nowadays．
A. involve；damaging
B. involved；damaged
C. involving；damage
D. involved；damage
网友回答
A. involve；damaging
B. involved；damaged
C. involving；damage
D. involved；damage
解析：involve涉及，包含，be involved in sth 与……有关联。涉及到……、第一空考查动词的-ed形式，做后置定语，involve与processes这里是动宾关系，故用过去分词形式；第二空为本句的谓语动词，根据后面的时间状语，nowadays 可知选damage.