He is a teacher, ________？(补充反意疑问句部分)

Is he a teacher? Is he a worker?(合并为选择疑问句)

My father is a worker.(就画线部分提问)

I went swimming last Sunday morning.(改为一般疑问句)

They often go to school on foot.(改为否定句)

Jim is a student.(将句子改为否定句)

将下列句子改为主动语态：

Today, too many trees are still being cut down.

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将下列句子改为主动语态：

Has your homework been finished?

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将下列句子改为主动语态：

The teapot was used for keeping tea hot after it was made.

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将下列句子改为主动语态：

I was given a pen by Jim a moment ago.

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