A、Saving money. B、Riding a bike. C、Recycling waste paper. D、Using a bag instead of plastic bags. D本题问的是“最后一个保护环境的方法是什么”(What’s

M: Hi, Grace. Would you like to help protect the environment?
W: I don’t know what I can do.
M: Well, first, you can start by not littering and turning off the lights when you leave the room.
W: Yes, that’s easy. What’s the next?
M: Second, you can ride a bike. Don’t take a bus or a taxi if you don’t have to.
W: That will save money, too. What else?
M: Try to recycle paper.
W: Mm, newspaper, magazines, mail… We get a lot of paper at home. Good idea.
M: And last, take a bag when you go shopping. Don’t use plastic bags.
W: OK. My parents do most of our shopping. I’ll tell them.
Q15. What are the two speakers talking about?
Q16. What’ s the last way to protect the environment according to the conversation?