出卷网(Chujuan.Net)为中小学教师出题组卷参考：月考试卷、模拟试卷、期中期末试卷

下列每个句子中有一处语言错误。每处错误涉及一个单词的增加、删除或修改。
增加: 在缺词处加一个漏字符号(∧), 并在其下写出该加的词。
删除: 把多余的词用斜线(\)划掉。
修改: 在错的词下划一横线, 并在该词下面写出修改后的词。
注意: 每处错误及其修改均仅限一词。
1. It is a relief to go to a concert or a movie with my friends once in while.
2. Our teacher has an excellent memory for names, who helps her quite a lot in her work.
3. While it comes to mathematics, I’m completely at sea.
4. It was raining too hard that we couldn’t help wondering how long it would take to get there.
5. I must limit myself with one coffee a day for fear of having heart disease.
6. Weather permits, we will start tomorrow.
7. He said he wasn’t nervous, but the sweat on his forehead gave him out.
8. Sandra was determined to become a doctor and all her hard work paid back in the end.
9. If you are traveling which the customs are foreign to your own, please do as the Romans do.
10. These problems, if not dealing with properly, will lead to greater problems.