根据对话内容，在空白处填写适当的话语，使对话完整并符合逻辑。（词数不限）

A. We talked about our future in Class yesterday.

B: Really? That sounds wonderful!  ?

A: I'm going to be a nurse.

B: A nurse? That's an  job.

A: That's right. You know I really like to work in a hospital, and I like to help children.

B: So you always have chances to help doctors. You must be very happy.

A: Yes. Sometimes I work in the day and sometimes  . But I will never feel tired because I like the job.

B: That's a great start. I hope to do some volunteer work, too.

A: By the way, some of my classmates are going to clean up the city parks tomorrow. ?

B: . I love working outside. Thanks!

A: It's my pleasure. They must be glad if you can join us.