21.--Why are you ready your study in America? --Because English is spoken the first language there. A.to,by B.for,as C.to,as D.for,by 查看更多

 

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--Why are you ready ________ your study in America?

--Because English is spoken ________ the first language there.

A.to;by          B.for;as          C.to;as             D.for;by

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