During the tenday vacation.they traveled to many parts of France their own expense.A. on B. withC. a

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【题目】During the tenday vacation，they traveled to many parts of France ________their own expense.

A. on B. with

C. at D. in

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【答案】C

【解析】考查介词。at one's own expense意为“自费”。句意：他们自费旅游了很多法国的地方。根据句意可知选C。