Question

【题目】(2017，北京)Lily is my classmate.We ________ each other since she came to our school.

A. know B. knew C. have known

Answer 1

【答案】C

【解析】句意：莉莉是我的同班同学，自从她来到我们学校我们就认识了。时间状语从句“since she came to our school.”是表示到目前为止的时间段，主句要用现在完成时态，其构成为have/has+动词的过去分词，故答案为C。