He ________ in our school since he ________ to Tianjin．

He ________ in our school since he ________ to Tianjin．

A.has studied; came

B.studied; moves

C.has studied; comes

D.will study; moved

答案及解析： A

解析：

主句应是现在完成时才能与since引导的时间状语从句相呼应。since引导的时间状语从句多用一般过去时，故A项正确。