按每小题的要求转换下面的句子，每空一词。
1. He likes classical music. (改为一般疑问句)
________ he like classical music?
2. He has never been to the USA. (完成反意疑问句)
He has never been to the USA, ________ he?
3. I have some bread for my breakfast. (对划线部分提问)
How ________ bread do you have for your breakfast?
4. The policemen haven't found anything in the room yet. (改为同义句)
The policemen have found _________ in the room yet.
5. Because it's raining, we must stay at home. (改为同义句)
We must stay at home _________ _________ the rain.