将下面的句子变成否定句和一般疑问句.简单的回答.

将下面的句子变成否定句和一般疑问句.简单的回答.
1.They were in the library a moment ago.
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2.John went to the cinema last Sunday.
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3.He came to school at seven this morning.
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4.They played the violin well yesterday.
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5.I saw a film yesterday evening.