Помогите плиз.
I. Express the same using passive constructions. 
(Example: We praised the girl. – The girl was praised.) 
1. We wasted a lot of time when we were looking for the right house.________________________________________________________________ 
2. People can do a lot to stop the destruction of forests.________________________________________________________________ 
3. People mustn’t use nuclear weapons.________________________________________________________________ 
4. You ought to rewrite the text to make it look nicer.