学进去

在下面对话的空白处填入适当的话语（话语可以是句子、短语或词）, 使对话完整, 并将答案写在答题卡的相应位置。,
A: Hi, Li Ming. Did you watch the program of CCTV-1 last night?
B: No, I didn’t. 1．?
A: It was about environmental protection. I like it very much.
B:2．?
A: Well, we should save water in our daily life.
B:3．?
A: We’d better not use plastic bags, either.
B: Good idea! The natural environment is badly polluted with plastic bags.
A: Right. We can also save paper. Making paper needs many trees.
B: OK. Thank you.
A: 4．. Would you like to join me to protect the environment?
B: 5．. I think we should try our best to protect the environment.