I.Complete the second sentence so that it means the same as first one.
1. There are a few students taking part in the event.
2. They have lived here for two year.
3. You should turn unwanted lights off, or you will waste a lot of electricity.
4. Let's write about the three Rs?
5. Learning about recycling is fun.
6. Plastic bags are cheaper than reusable bags.
Reusable bags are__________________
7. It's not good to throw old clothes away.
8. Remember to turn the tap off when you are brushing your teeth.