单句改错: 每句只改一处错误。
删除：把多余的词用斜线(﹨)划掉。
增加：在缺词处加一个漏字符号(∧), 并在其下面写出该加的词。
修改：在错的词下划一横线, 并在该词下面写出修改后的词。
1. Once you promise, you must keep your words.
2. He set a limit with the expenses of the trip.
3. It is rude of you to speak to Mom like that. I won’t have you speak to her like that again.
4. How fun it is to have an ice-cream on a hot summer day!
5. I’d just about given myself up for lost while I was spotted by a ship.
6. My parents used all what they had to give me a better education.
7. Rather than to take the plane all the way, they flew to Vancouver and then took the train.
8. Nothing could be good if he won the customers back.
9. George is the only one of those people who have trouble making up his mind.
10. All kinds of festivals and celebrations have held everywhere since ancient times.