Question

【题目】 We should often keep _____ touch with each other, because we are good friends.

A.on B.to C.in D.up

Answer 1

【答案】C

【解析】

试题分析：句意：我们应该经常彼此保持联系，因为我们是好朋友。keep in touch with与……保持联系，故选C。