My pen friend and I keep in touch ________ sending e-mails often. [ ]A. with B. by C. onD. of-高三英语

题目简介

My pen friend and I keep in touch ________ sending e-mails often. [ ]A. with B. by C. onD. of-高三英语

题目详情

My pen friend and I keep in touch ________ sending e-mails often.
[     ]
A. with      
B. by
C. on          
D. of
题型:单选题难度:中档来源:陕西省模拟题

答案

B

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