WE WERE DISCUSSING THE TRAFFIC PROBLEMS WHEN THE MAYOR CAME.A.IT WA...

18.We were discussing the traffic problems when the mayor came.

A.It was when the mayor came that the traffic problems were discussing.

B.It was the traffic problems that were discussed by us when the mayor came.

C.It was the traffic problems that were being discussed when the mayor came.

D.It was we that the traffic problems that were being discussed by when the

mayor came.