Now even the middle school students go abroad for study .A. at their own expenseB. by expe

问题补充：

Now even the middle school students go abroad for study .

A. at their own expense

B. by expense their own

C. with their own’s expense

D. on expense of their own’s

答案：

(答案→)A. at their own expense

B. by expense their own

C. with their own’s expense

D. on expense of their own’s

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