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.