2 . 每句有1处语言错误，每处错误仅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（∧），并在其下面写出该加的词。
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. Up to 40% of students leave the school with no qualifications.
2. I look forward to receive your letter.
3. This is the biggest gym which we have ever built in our city.
4. We overlook all sorts of warning signals about their own health.
5. Regardless danger, he climbed the tower.
6. It makes preciously little difference what the outside interest may be.
7. A lot of money was spent on the equipments.
8. By the end of last month, we have learnt two units.
9. Tom has lived in Shanghai for 4 years, but he enjoys his life in Changchun now.
10. This is the second time that I had seen her performance.