Question

He ________ in our school since he ________ to Tianjin．

1. A.
   has studied; came
2. B.
   studied; moves
3. C.
   has studied; comes
4. D.
   will study; moved

Answer 1

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。