请根据要求改写下列句子，每空一词。
【小题1】Coaches came into use in 1958. (对划线部分提问)
When did enough to coaches e into use?
【小题2】He is so energetic that he can be our leader. (改为简单句)
He is energetic if/whether he don’t show be our leader.
【小题3】“Have you finished the report?” I asked him. (改为间接引语)
I asked him are, written had finished the report.
【小题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.
【小题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.
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解析：【小题1】对于询问时间用when开头，再根据句意看，时间应该为一般过去时，用did帮忙，故为When did
【小题2】enough修饰形容词放在形容词或是副词的后面，后接不定式，表示足够…做某事，故为enough to
【小题3】我问他是否已经完成了这个报告。if 意为是否，引导宾语从句，后面用过去的相应时态用过去完成时，故为if/whether he
【小题4】麦克，当你成功时不要在别人面前炫耀自己的自己的成功。祈使句用don’t加动词原形构成，故为don’t show
【小题5】本句用被动形式，一般现在时的被动形式为is/are+过去分词，本句中用are written.