33.The bus is the safest and cheapest way .so every year people go to travel by bus. A.travel\millions of B.to travel\million of C.to travel\millions of D.to travel\millions 查看更多

 

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The bus is the safest and cheapest way ____________,so every year ____________ people go to travel by bus.

A.travel, millions of                   B.to travel, million of

C.to travel, millions of                 D.to travel, millions

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