Our two senior programmers________each other ever since they were at college.A、k

游客2024-07-11  7

问题 Our two senior programmers________each other ever since they were at college.

选项 A、know
B、knew
C、have known
D、are knowing

答案 C

解析 本题考查动词的时态。当ever since引导时间状语从句时,主句一般使用现在完成时,从句用一般过去时。两个程序员从大学起就认识,一直持续到现在,故用现在完成时,因此确定本题答案为C。know是一般现在时,knew是一般过去时,are knowing是现在进行时,这三种时态都不符合语法要求,均可以排除。
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