根据汉语提示完成英语句子。

1. Children are very                                            (对玩电脑游戏感兴趣) computer games.

2. Yesterday I bought                                             (一双) sports shoes.

3. I can't afford to buy the dictionary, because I have                                           (用完了) my money.

4. I have been                              (集邮) for ten years.

5. —How long have you been                              (学习历史) in China?   —Since last year.

6. She                               (去过)to Beijing twice.