填入一个适当的词补全对话（每空一词）

Wu Binbin: These robots are so cool! I love this museum!

Robin: Me ! Don't forget to buy some giftsGrandpa.

Wu Binbin: I know. But I really need go to the bathroom. Where is it?

Robin: It's the second floor.

Wu Binbin: OK, .

Robin: You're welcome.