改写句子和填空

改写句子和填空
根据要求改写下列句子：
1.Dinosaurs lived on Earth before people.(改成一般疑问句）
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2.(Millions of people visit) Dr Sun Yat-sen's Mausoleum every year.(对括号部分提问)
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3.Diogenes found (the secret of how to be happy).(对括号部分提问)
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4.Sammy wants to win a free trip to (Disneyland).(对括号部分提问)
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5.Han Dynasty was created by Liu bang.(改为同义句)
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一、用介词填空：
1.They'll go to London_____a holiday this winter.
2.The table is covered_____a beautiful tablecloth.
3.The plane enables you to travel to Shenzhen_____about two hours.
4.America is a leader_____many fields.