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—Whereareyou,Mary?—Iaminthestudy,tomypenfriendinBeijing.A.towriteB.writing

题目详情
—Where are you,Mary?—I am in the study,______to my penfriend in Beijing.A.to write B.writing
▼优质解答
答案和解析
B.writing
现在分词短语作伴随状语