按要求完成下列句子，每空一词。
1. The boys used to swim in the river. (改为否定句)
The boys _____ _____ to swim in the river.
2. Li Lei learnt English all by himself. (改为同义句)
Li Lei _____ _____ English.
3. I used to go swimming in the summer vacation. (改为一般疑问句并作肯定回答)
_____ you _____ _____ go swimming in the summer vacation?
_____, I _____.
4. He used to play computer games.(对画线部分提问)
_____ _____ he _____ _____ do?
5. I like reciting poems! (改为同义句)
I _____ _____ of reciting poems!