We found ________ necessary to protect the environment.

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

We found _________ necessary _________ our pocket money to support Project Hope.

A. that; to donate               B. that; donating       C. it; to donate                  D. it; donating

We found          necessary to protect the environment.

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

We found _______ necessary _______ our pocket money to support Project Hope.

1. A.
   that; to donate
2. B.
   that; donating
3. C.
   it; to donate
4. D.
   it; donating