根据下面所提供的对话情景和内容，从A-G中选出适当的句子，填入标有题号的空白处，使对话意义连贯、完整。

A：Hello John! Nice to meet you．

B：Hi, Gina! Nice to meet you，too．

A：You weren’t at home last week．　 21　

B：Oh，　 22　

A：Where did you go?

B：I went to Hangzhou and visited many beautiful places．

A：　 23　

B：No, I didn’t．

A：　 24　

B：We climbed the mountain．But I hurt my right leg．

A：Oh, 　　25　

B：But I am okay now．

20．他正在同我们的英语老师交谈。

He is 　　　　　　　　our English teacher．

19．我们该休息了。

　　　 　　　　　for us to have a rest．

18．学生们正在拍照。

The students are 　　　　　　　　．

17．李明昨天给家里写了信。

　Li Ming 　　　　　　　　yesterday．

根据汉语提示完成下列句子，每空一词(含缩写词)。

16．他准备点菜吗?

Is he 　　　　　　　　order?

15．If you want to learn English well，you should practice 　　　　(说) English more often．

14．Ihave 　　　　(从来没有) been to the U．S．What about you?

13．Jim didn’t come to school yesterday．What 　　　　(发生) to him?

12．How many 　　　　(票) do you need?