把下面句子变成被动语态

A man was following us on our way back home.

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把下面句子变成被动语态

We must do something to keep the balance of nature.

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把下面句子变成被动语态

Which article did you write last year?

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把下面句子变成被动语态

We should make full use of our time.

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Using words

Fill in the blanks using the correct forms of the words.

It's hard for anyone to follow (popular) ________.

Using words

Fill in the blanks using the correct forms of the words.

Everyone is puzzled at her (mystery) ________ smile.

Using words

Fill in the blanks using the correct forms of the words.

We held a (celebrate) ________ for his eightieth birthday.

Using words

Fill in the blanks using the correct forms of the words.

I don't think the suspect is telling us the (true) ________.

Using words

Fill in the blanks using the correct forms of the words.

This is the (prove) ________ for the theory.

Using words

Fill in the blanks using the correct forms of the words.

There is a (wood) ________ table in the hall.