按给出的要求转换下列句子，每空限填一词。
1. I have a pain in my head. (改为同义句)
I have _________ _________.
2.You'd better go home at once. (改为否定句)
You'd _________ _________ go home at one.
3. I used to swim in the river near my home. (改为一般疑问句)
_________ you_________ to swim in the river near your home?
4. The pictures are very beautiful. (改为感叹句)
________ _________ the pictures are!
5. Seth played on the computer last Sunday. (改为过去进行时)
Seth _________ _________ on the computer at 8:00 last Sunday.
