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：
主句應是現在完成時才能與since引導的時間狀語從句相呼應。since引導的時間狀語從句多用一般過去時，故A項正確。