根据所给的汉语语提示，转换下列句型。
1. E-mail English is used for saving time. (改为同义句)
E-mail English is used time.
2. People can use their computers to talk to each other. (改为同义句)
People can use their computers to talk to .
3. He was supposed to arrive at 7:00 pm. （对画部分提问)
was he supposed to arrive?
4. He has ever been to Tokyo. (改为否定句)
He been to Tokyo.
5. Don't be afraid of making mistakes. (改为同义句)
Don't be afraid mistakes.
