选择补全对话。 ① Thanks ④ I take twelve, please ⑦ What's ② welcome ⑤ I'll take twelve, please ⑧ I'd like some donuts ③ happy ⑥ How much ⑨ Would you like some donuts A: __________ for one donut? B: One yuan. A: __________! B: Here you are. A: __________! My friends like donuts! B: You're __________.