按括号内的要求，改写下列句子，每空一词。

1．My brother is a police officer．（对划线部分提问）

_________ does your brother _________?

2．Jim likes some fruit．（改为否定句）

Jim _________ like _________ fruit．

3．They speak Chinese．  （对划线部分提问）

_________ _________ do they speak?

4．She works in the post office．（变为一般疑问句）

_________ she _________ in the post office?

5．They like P．E．because it's fun．（对划线部分提问）

_________ _________they like P．E．?