The Whites are holiday.But I don't know where they have gone their holiday.A. in forB. o

问题补充：

The Whites are holiday.But I don know where they have gone their holiday.

A. in, for

B. on, for

C. for, in

D. at, on

答案：

A. in, for

(答案→)B. on, for

C. for, in

D. at, on

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