unit 50 预约牙医

dialogue 
英语情景对话

A:l wonder if the dentist could fit me in early tomorrow.
A:我想知道牙医明天早些时候是否能给我看牙？

B:l'm afraid there's nothing available before noon.
B:恐怕中午之前他都没空。

A:How about 12:45?
A:那12点45怎么样？

B:Sorry, but he's busy then too.
B:对不起，那时他还在忙。