1 . Have you found ways to make waste water clean? (改为被动语态)
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2 . She has already returned this book to the library. (改为被动语态)
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3 . He ________ ________ ________ (已被挑选出来) to take part in the sports meeting. （根据汉语提示完成句子）
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4 . With the help of high technology, more and more new substances ________ ________ ________ （被发现）in the past few years. （根据汉语提示完成句子）
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5 . When and where to go for the on-salary holiday ________ ________ ________ ________ （没有确定）yet. （根据汉语提示完成句子）
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6 . The earthquake has killed many people. （同义句转换）
Many people________ ________ ________ by the earthquake.
Many people
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7 . 除了迈克，汤姆也来了。
________ ________ ________ , Tom also came.
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8 . I got the job due to your help.（同义句转换）
________ ________ your help, I got the job.
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9 . The castle is under attack at the moment. （同义句转换）
The castle________ ________ ________ at the moment.
The castle
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10 . The computer is in use now. （同义句转换）
The computer________ ________ ________ now.
The computer
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