It is third time that he______ his homework since he______ to this school
A doesn’t finish; comes      B hadn’t finished; came 
C. hasn’t finished; came    D didn’t finish; came

 Since he _______ to say nothing about this to anyone, he obviously intended to keep it a secret.

A. selected                           B. pursued                    C. tended               D. chose

It is third time that he______ his homework since he______ to this school

A doesn’t finish; comes      B hadn’t finished; came 

C. haven’t finished; came    D didn’t finish; came

— How long have you known John?
— Since he ______ to our class.

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