A．: 86 in the room?
B．: There are some kinds of robots made by the students in our school.
A．: Really? What are they 87 for?
B．: The one with blue eyes is a guide robot. She can show you around our school.
A．: 88 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 89 our environment clean.
A．: That’s wonderful! What good students! I’m proud of them.
B．: So 90 I.
86.___________