根据情景，把下列对话内容补充完整，使其意思连贯。 (S = Shirley; E = Eric) S: Hi, Eric! Great news! E: 1. _________? S: Plastic (塑料的) bags thinner than 0.025 mm will not be allowed to use in the supermarket. E: Really? Glad to hear that. S: Me too. But I think they are really useful in our daily lives. 2. _________? E: Yes. It's really convenient (方便的) to use them. S: But do you know 3. _________after using them? E: Yes. Some people often throw them away carelessly. S: They don't realize they have made the environment polluted. E: 4. _________? S: Well use cloth bags instead of plastic bags. E: That's a good idea. Though using cloth bags will cost us money, it's our duty to protect the environment. What do you think? S: 5. ________.