He was ____________ (disappoint) that they were not coming

4. He was ____________ (disappoint) that they were not coming.
5. Air and water _____________ (pollute) can make people fall ill.
6. Plastic bags will cause _____________ (pollute).
7. Mr Brown is one of the ___________ (conserve)
8. We should make our world _____________ (pollute)
9. I’m ____________ (disappoint) that you didn’t do your homework.
10. Listen to me ___________ (care) you can solve the problem.