The U. S. government has planned to __________ updating public-transport systems.

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The U. S. government has planned to __________ updating public-transport systems. 查看材料

A.reduce traffic jams

B.drive around

C.go by bus

D.spend more money

E.travel regularly

F.encourage more private cars

请帮忙给出正确答案和分析,谢谢!

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