按要求转换下列句型。

1. This dress cost her 90 yuan. (改为一般疑问句)
_____ this dress _____ her 90 yuan?
2. The TV play is really wonderful. (改为感叹句)
_____ _____ the TV play is!
3. The boy in blue is my brother. (就划线部分提问)
_____ _____ is your brother?
4. Water the young tree often, or it will die. (改为同义句)
_____ you don't water the young tree often, it will be_____.
5. Tom won' t visit the farm. He'11 stay at home. (改为同义句)
Tom will stay at home _____ _____ visiting the farm.
6.My brother bought some CDs yesterday. (改为否定句)
My brother ________ ________ any CDs yesterday.
7 Mary will come here in ten minutes. (对划线部分提问)
_________ _________ will Mary come here?
8. We can build a big bridge over the Huangpu River in two years. (改为被动语态)
A big bridge can _________ _________ over the Huangpu River in two years.
9. We didn't go to the park last Monday. It rained hard. (保持原句意思)
We didn't go to the park last Monday ________ ________ the heavy rain.
10. “Where will you go during the summer holidays?” he asked me. (保持原句意思)
He asked me where _________ _________ go during the summer holidays.
11. He will be away for long next year. (改为否定句)
He ______ be away for long next year.
12. This is my box. (改为复数形式) ____ are our_____.
13. The Yellow river is 5,464 kilometres long. (对画线部分提问)
_____ _____is the Yellow River?
14. Did they have a good journey home? Do you know? (合并为带宾语从句的复合句)
Do you know ____ they ____ a good journey home?.
15. It took me fifteen minutes to finish the e-mail(电子邮件).(改为同义句)
____ spent _____ quarter in _____ the e-mail.