I. 根据句意及提示填写单词
【小题1】What are you going to be in the f________？
【小题2】Mary can't come to school today because she's__________（ill）.
【小题3】Sorry，Kitty's not in her_________（a room where someone has a desk and works）right now.
【小题4】Mr. Li is a___________（someone whose job is to collect and deliver letters）.
【小题5】Can you tell me the way to the police s________？