When all these bridges      ,traveling will become easier.

This book      by a famous writer many years ago.

Nowadays the old should      in our society.

—Now computers      ____   everywhere.
—I agree with you. I think they are the most useful inventions.

—Did Jack come to our party yesterday?
—No, he              .

The 29th Olympic Games _____ in Beijing in 2008.

By the time the police came, the aliens _____ for a few minutes.

Twelve-year-olds should not _______ to drive in China.

He ______ trees in his garden just now.

句型转换。
1. People all over the world know the Great Wall. (改为被动语态）
    The Great Wall _____ _____ _____ people all over the world.
2. My little brother is too short to reach the apple on the Table. (改为同义句)
    My little brother is _____ short _____ he can't reach the apple on the table.
3. My friend told me some good news.（改为被动语态）  
    Some good news _____ _____  to me by my friend.
4. The old man no longer lived there.（改为同义句）  
    The old man _____ live there _____ _____.
5. My teacher offered me some good advice yesterday. (改为同义句)
    My teacher _____ some good advice _____ me yesterday.