7 . 请你修改以下的每个句子，每句有1处语言错误，错误涉及一个单词的增加或修改。
增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。
修改：在错的词下面划一横线，并在横线下面写出修改后的词。
注意：每处错误及其修改仅限一词。
1. Some classmates suggest we can go to places of interest nearby.
2. The manager proposed that Tom was given an opportunity to explain why he’d refused to go there.
3. If only I listened to my parents, I might have passed the driving test!
4. The conference wouldn’t have be so successful if we hadn’t made adequate preparation.
5. If only there was some magic button I could push to take away the sadness in her eyes.
6. —Larry, such mistakes could have avoided if you had been more careful.
—Sorry, sir. I’ll do better next time.
7. I can’t stand him. He always talks as though he knows everything.
8. I made the suggestion that she stuck to the plan she had made.
9. It was ordered that no smoking was not allowed in the library, which made the smokers unhappy.
10. How I wish I bought that skirt when it was available! Ugh! I regret it every time.