1 . 增加：在缺词处加一个漏字的符号（^），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. This is a two-year course taught by mean of lectures and seminars.
2. My mother drag me from my bed angrily to clean the house the other day.
3. We encouraged students to participate the singing contest.
4. Trump narrow won the state in the 2016 election.
5. As far as maths is concerning, he is not good at it.
6. We should do whatever we can do to help those people in the need.
7. No one knows when the first people arrived in where we now know as California.
8. Her father works in a factory, that he makes cars.
9. The government urged that people stayed at home when there was a pandemic.
10. When the party will be held are not certain now.

2 . 增加：在缺词处加一个漏字的符号（∧），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. The guides were naturally willing to go alone and seek a way out of difficulty, so we all went together.
2. You may depend on that it won’t happen again.
3. Concentrated your attention on English will enable you to master the language.
4. We have a lot in common, that is because we can cooperate.
5. The number of endangered species are on the increase.
6. Parents nowadays are aware about the importance of children’s education.
7. More and more material possession do not suggest that you gain more happiness.
8. It is such a honor to take part in the celebration, so how could I make any mistakes?
9. The mosquitoes annoyed me very much that I couldn't sleep.
10. The concert was constructed by your cousin last night was really a great success.

3 . 增加：在缺词处加一个漏字的符号（∧），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. If you are in the need of a deadline extension, turn to me for help.
2. Fortunate, the fire was discovered as soon as it started.
3. Paper-cut is one of the oldest folk arts in China, dated back to the 6th century.
4. After finishing the task, the workers all went back home, happy but tiring.
5. The books are in great significance to beginners.
6. The host was talking with his friends that afternoon while the housekeeper showed the lady in.
7. The boy has made progresses since last year.
8. I had no alternative but report it to the headmaster.
9. Once educating to speak properly, that girl could pass herself off in three months as a duchess.
10. It is said that they rob the bank yesterday.