If a computer crashes, you will lose the file you _______ on if you don’t save it early enough.

A. are working　　　　　　　　　　　　　　　　　　　　 B. work

C. will work　　　　　　　　　　　　　　　　　　　　　　 D. worked

If a computer crashes, you will lose the file you      on if you don’t save it early enough.

A．are working                B．work               C．will work                D．worked

If a computer crashes，you will lose the file you _____ on if you don’t save it early enough.

If a computer crashes，you will lose the file you _____ on if you don’t save it early enough.

1. A.
   are working
2. B.
   work
3. C.
   will work
4. D.
   worked