请根据要求改写下列句子，每空一词。
(1)Coaches came into use in 1958. (对划线部分提问)
coaches come into use?
(2)He is so energetic that he can be our leader. (改为简单句)
He is energetic be our leader.
(3)“Have you finished the report?” I asked him. (改为间接引语)
I asked him had finished the report.
(4)Mike, you mustn't show off before others when you have success. (改为祈使句)
Mike, off before others when you have success.
(5)He often writes the words “best wishes” at the end of his letters. (改为被动语态)
The words “best wishes” often by him at the end of his letters.