根据对话内容填入适当的单词补全对话，使句意完整，符合逻辑，每空限填一个单词。
A. 1. ______ in the room?
B. There are some kinds of robots made by the students in our school.
A. Really?What are they 2. _______ for?
B. The one with blue eyes is a guide robot.She can show you around our school.
A. 3. ________ about the taller one?
B. He is a cook robot.He can cook something nice for you .
A. Oh, I think that’s a cleaning robot .
B. Maybe you’re right.When he finds waste things, he’ll pick them up . He can 4. _____ our environment clean .
A. That’s wonderful!What good students!I’m proud of them .
B. So 5. _______ I .