单项选择题
A.the less pollution we have B.the harder pollution can be done away with C.the more pollution there will be D.the more easily pollution can be controlled
A.The box fell down and hit the man on the head. B.The box continued to go up. C.The man went up to the top of the building. D.The man fell down and broke his legs.
A.Schools B.Local, state and national government C.Family and community D.All of the above