【Language Focus】
词汇与语法
请在短文中的横线处写出动词的一般过去式形式。
A Journey Through Time:Grandpa’s Gift
Last Sunday, I 1. (clean) my room and 2. (find) an old wooden box in the corner. It 3. (be) my grandpa’s. I 4. (open) it carefully. Inside, there 5. (be) a strange metal(金属的) device(装置) and a letter.
The letter 6. (say), “My dear child, this is a ‘Memory(记忆) Viewer(观看器)’. It can show you one day from my past. I 7. (choose) the day I 8. (meet) your grandma. 9. (press) the red button and see.”
I was excited but a little nervous(紧张的). I 10. (press) the button. Suddenly, I 11. (see) a young man in an old street. He 12. (carry) books and 13. (bump) into a lady. Her books 14. (fall) down.
He 15. ______ (help) her pick them up. They 16. ______ (talk) and 17. ______ (smile). That was how their story 18. ______ (begin).
It was the most beautiful gift. I 19. (understand) their love and I 20. (keep) the box safely.

1. cleaned 2. found 3. was 4. opened 5. was 6. said 7. chose 8. met 9. Press 10. pressed 11. saw 12. carried 13. bumped 14. fell 15. helped 16. talked 17. smiled 18. began 19. understood 20. kept

本题考查动词的一般过去式用法，全文以"Last Sunday（上周日）"为时间背景，描述过去发生的事件，需要将括号内的动词转换为对应的一般过去式：
1. 规则变化动词：通常直接在词尾加-ed；以不发音的字母e结尾直接加-d；以"辅音字母+y"结尾的动词，变y为i再加-ed。
2. 不规则变化动词需要使用特殊变形，同时there be句型要遵循就近原则，根据靠近be动词的名词单复数选择对应的was/were。