Tom is keen _____ surfing the Internet in his spare time.A.atB.onC.toD.in-英语

题目简介

Tom is keen _____ surfing the Internet in his spare time.A.atB.onC.toD.in-英语

题目详情

Tom is keen _____ surfing the Internet in his spare time.
A.atB.onC.toD.in
题型:单选题难度:偏易来源:不详

答案

B

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