Many people believe that will takes years to develop a car that does not pollute the air.

发布时间：2020-08-16 11:11:45


Many people believe that      will takes years to develop a car that does not pollute the air.
A. it
B. that
C. there
D. this

网友回答

(答案→)A. it
B. that
C. there
D. this
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