They _____ too much pollution.
A. give
B. get
C. promote
D. produce
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水泥混凝土路面面层横向施工缝在缩缝处采用平缝加( )。
I would find ______ difficult to stop using my car.
A. one
B. that
C. it
D. this
produce的名词是______.
A. promotion
B. production
C. pollution
D. polluted