句型I want to be.../Why? — 英语词汇题
题目
补全对话（每空一词）。A: My dream job is to help people learn at school. B: Oh, I see! You want to be a t________. A: Yes! And you? What do you want to be? B: I want to be a d________. A: W________? B: Because I can help sick people.