--What color is your skirt? -- ________
A．It's yellow． B．It's expensive． C．It's old．
--Go to bed now, Mike.
--___________.
A. OK. B. See you. C. Thank you.
–Let’s go to the supermarket.
--Good. But how?
--__________.
A. Great. B. By bike. C. OK. Let’s go.
–It’s pretty.
--____________.
A. It’s nice. B. Thanks C. Yes, please.
–Let’s go to school.
--_____________.
A. All right. B. Thank you. C. See you.
--How are you?
--____________.
A. I’m Helen. B. I’m sorry. C. I’m fine.