— Why was Professor Johnson unhappy those days?

— Can’t you see it clearly? The only reason was that the theory he stuck to________ wrong.

A. proving                               B. being proved    

C. proved                            D. was proved

 — Why was Professor Johnson unhappy those days?

— Can’t you see it clearly? The only reason was that the theory he stuck to________ wrong.

A. proving                               B. being proved    

C. proved                            D. was proved

---Why was Professor Johnson unhappy those days?

---Can’t you see it clearly?

--- The only reason was that the theory he insisted on ________ wrong．

1. A.
   proving
2. B.
   being proved
3. C.
   proved
4. D.
   was proved

—Why was Professor Johnson unhappy those days?

       —Can't you see it clearly? The only reason was that the theory he stuck to_____ wrong．

       A．proving     B．being proved      C．proved       D．was proved

.

— Why was Professor Johnson unhappy those days?

— Can’t you see it clearly? The only reason was that the theory he stuck to________ wrong.

A. proving           B. being proved        C. proved      D. was proved