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

 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．a(chǎn)re 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.