if we cut down and____ trees,we _____our best fighters against pollution.A.burn,destroyingB.burned,destoryC.burn,destoryD.burn,are destorying

问题描述:

if we cut down and____ trees,we _____our best fighters against pollution.
A.burn,destroying
B.burned,destory
C.burn,destory
D.burn,are destorying

D

也许选D哦.不太确定.语感.