a) Read, listen and act out.
Steve: It's a lovely day!
John: Yes, isn't it?
Steve: So sunny and there's no wind. What shall we do?
John: Let's go skiing.
Steve: Oh, no. I think it's too cold to go skiing today. Look, it's minus 15.
John: Yes, you are right. We could go to the cinema then. Steve: Sure. Come on.
Penny: Betty, what's the weather like today?
Betty: It's a lovely morning. It's warm and sunny. What shall we do?
Penny: Well, we could go to the beach.
Betty: Good idea! I'll be ready in a minute.

b) Find and name the cases of using It's in the dialogues.