吸入的气体中氧气多于二氧化碳那，呼出的气体中二氧化碳多于氧气．（判断对错）
① How much is it? ____ A. OK. Here you are.
② Can I try them on? ____ B. It's $89.
③ Is it too expensive? ____ C. It's very pretty.
④ How do you like this skirt? ____ D. Yes，it is.
