1. There will be more cars in 10 years. (改为一般疑问句，并做否定回答)
be more cars in 10 years?
No, .
2. He will come back next week. (对划线部分提问)
he come back?
3. He has more friends than me. (改为同义句)
I have than him.
4. Lucy is writing a letter to her mother now. (用tomorrow改写句子)
Lucy a letter to her mother tomorrow.
