句型转换(急）

1.What were helicopters doing as Yang Liwei returned to the earth's atmosphere?

What were helicopters doing as Yang Liwei ____ ____ ____the earth's atmosphere?

2.I am of the opinion that the dollar will be strong.

___ ___ ___ ___ that the dollar will be strong.

3.In the opinion of most people, something has to be done to prevent the air pollution.

In ___ ___opinion,something has to be done to prevent the air pollution.

4.He has experience at making kites.

He ___ ___ ___making kites.

5.He is keen to pass the final examination.

He ___ ___ ___pass the final examination.

6.The meeting was over at midnight.

The meeting___ ___ ___ ___ at midnight.

went back to

i have a opinion

most people's

不知

不知

不知

1,went back to

2,i hold the opinion

3, our common

4,is good at

5,is interested in

6,came to an end

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