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. ________.