将下列句子改为主动语态：

The baby was made to stop crying by Ling Feng.

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将下列句子改为主动语态：

Children should be taken good care of.

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将下列句子改为主动语态：

English is very widely used for business between different countries by us.

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将下列句子改为主动语态：

These holes were dug by them on that hill.

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将下列句子改为主动语态：

The stars can't be seen in the daytime, but they can be seen during the night.

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将下列句子改为主动语态：

Now tea is grown by people here.

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把下列句子变为被动语态：

People produce salt in Jiangxi.

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把下列句子变为被动语态：

Lily found nobody in.

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把下列句子变为被动语态：

We saw a lot of students playing games on the playground.

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把下列句子变为被动语态：

Kate looked after her mother at home.

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