Rewrite the following sentences as required(根据所给要求，改写下列句子。每空格限填一词)

Fred plans to work in the charity hospital in the community．(改为否定句)

Fred ________ ________ to work in the charity hospital in the community．

句型转换。

Some reporters are interviewing a government official on traffic problems now．(改为被动语态)

A government official is ________ ________ by some reporters on traffic problems now．

句型转换。

Lisa didn't hang out with her friends yesterday．(改为肯定句)

Lisa ________ out with her friends yesterday．

句型转换。

Mr．Brown and his wife have been married for 20 years．(改为同义句)

Mr．Brown and his wife ________ ________ 20 years ago．

句型转换。

Mom felt tired after she cooked for the whole family．(改为简单句)

Mom felt tired after ________ for the whole family．

句型转换。

The boy has been to the U．S．A．twice．(对画线部分提问)

How ________ ________ has the boy been to the U．S．A．?

句型转换，每空一词。

He wants to be a teacher．(划线部分提问)

________ does he ________ to be?

句型转换，每空一词。

Look at that boy．He has short hair．(合成一句话)

Look at that boy ________ short hair．

句型转换，每空一词。

She has long hair and big eyes．(一般疑问句)

________ she ________ long hair and big eyes?

句型转换，每空一词。

My grandfather is reading the newspaper now．(划线部分提问)

________ is your grandfather ________ now?