根据句意，用括号内所给动词的适当形式填空。【小题1】More than one personwas cleaning(clean) the classroom at 6 o’clo

根据句意，用括号内所给动词的适当形式填空。
【小题1】More than one personwas cleaning (clean) the classroom at 6 o’clock yesterday.
【小题2】 — Is London the first European city to hold (hold) the Olympic Games?
—No, it has been held in many other places in Europe.
【小题3】Not only the students but also the teacher is asked (ask)to go to school on time now.
【小题4】 She had lived (live) in this city for years when I met her in 1990.
【小题5】 People should save electricity by not leaving (not leave) lights on when they are not needed.

解析：【小题1】句意：不只一个人在昨天6点钟时打扫教室。More than one person做主语时，谓语用单数；根据at 6 o’clock yesterday时间状语可知用过去进行时：was cleaning。【小题2】句意：—伦敦是第一个举办奥运会的欧洲国家吗？—不是，欧洲许多其他的地方都举办过了。the first修饰名词时后面用动词的不定式形式。【小题3】句意：现在不仅学生而且老师被要求按时到校。并列连词not only … but also...连接两个主语时，谓语动词采取就近原则。这里the teacher是单数名词靠近谓语动词，所以用单数形式，根据意思可知本句要用被动语态。【小题4】句意：我在1990年遇到她时，她已经在这个城市住了很多年了。1990年之前是过去的过去，所以要用过去完成时，谓语动词的形式是had lived。【小题5】句意：人们应该节约用电通过不用时关灯的方法。by是介词，后面用动词的-ing形式，其否定形式是在-ing前加not。所以是not leaving。

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