Simon thought his computer was broken _______ his little brother pointed out that he had forgotten to turn it on

1. A.
   until
2. B.
   since
3. C.
   after
4. D.
   because

Simon thought his computer was broken _______ his little brother pointed out that he had forgotten to turn it on.

A. until　B. since?

C. after D. because?

Simon thought his computer was broken ____________ his little brother pointed out that he had forgotten to turn it on．

A．until         B．unless         C．after           D．when

Simon thought his computer was broken ________ his little brother pointed out that he had forgotten to turn it on.

A. until　　　　　 B. unless

C. after　　　　　 D. because