I have made ______ clear that all of us are strongly against smoking in the office.

A. this                           B. it                            C. that                                D. one

I have made ______ clear that all of us are strongly against smoking in the office.

1. A.
   this
2. B.
   it
3. C.
   that
4. D.
   one

I have made ______ clear that all of us are strongly against smoking in the office.

A. this                           B. it                            C. that                                D. one

I have made ______ clear that all of us are strongly against smoking in the office.