Suggestions and invitations

Grammar

Mary and Paul are making suggestions and invitations
What about going to the city centre?
That's a great idea.

Would you like to go shopping?
Sure. I'd love to.

Would you like to have a coffee?
I don't think so. Let's have a coke.
That's a great idea.

How about taking the train home?
I'm not sure about that.

Why don't we organize a party tomorrow?
That sounds great.