题目内容：

根据对话内容，从A-G选项中选出能填入空白处的最佳选项。选项中有两项为多余项.

A: Hello!

B:  1.              !

A:Nice to meet you!

B:  2.               .

A:  3.               ?

B:Oh,it's a watch.

A:  4.              ?

B:No,it isn't.It's his watch.

A:   5.          .

B: You’re welcome.