Rewrite the sentences, using '' adjectives + Noun clause'':
ex : you want to know more about 3 R. I am very pleased
->I am (very) pleased that you want to know more about 3 R.
1. You are interrested in protecting environment. He is delighted ->..................................................................................
2. They could save money from reused things. They are very happy. ->..............................................................................................................
3. We won the first prize in collecting cans. My teacher feels pleased. ->...................................................................................................
4. The rivers are becoming heavily polluted. We are worried. ->......................................................................................