句子改错。
1. We didn't go to South Hill for a trip because the rain yesterday. __________
2. I wonder when will we start the charity walk. __________
3. Have you listened to the radio? Will it be cold or rain tomorrow? __________
4. The story took place at the first of last term. __________
5. Fund-raising events are meaningful to organize them. __________
6. That is difficult for me to catch up with my classmates. __________
7. Because Kitty will go back to America so we plan the activity of "A day out". __________
8. I think that is useful to learn a second language. __________
9. You'd better to save money and help poor classmates. __________
10. Unluckly, he didn't become healthy in the end. __________