I keep in contact with my pen friend ________ sending e-mails to each other. A.by B.for C.with D.fro...
2022-09-13 04:01:24 107次 牛津上海版英语八年级第一学期Unit 1 Penfriends（A）同步练习（含听力） 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
I keep in contact with my pen friend ________ sending e-mails to each other.
A.by B.for C.with D.from
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