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) Hebeen to Tokyo. 5. Don"t be afraid of making mistakes. (改为同义句) Don"t be afraid mistakes.