1 . 假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。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：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。

The history of painting in China is long or full of masterpieces from different ages when have their own unique styles.

Truly artistic paintings other than calligraphy (书法) came into exist during the Qin Dynasty and matured in the Wei and Jin periods. It were in the Tang Dynasty that it developed more quicklier than any other previous period. An art continued to advance during the Song and Yuan Dynasties with an increased focus such subjects as mountains and animals. Traditional painting techniques lasted until the end of the Qing Dynasty, when modern painting techniques started off to challenge the traditional one. Although modern paintings had been heavily influenced by the West, they still value traditional painting techniques.

4 . Mary was chosen as an_____ (assist) to help Mr Brown finish his research. (所给词的适当形式填空)

5 . __________（work） hard at your lessons, you are to succeed.（所给词的适当形式填空）

6 . He helped to organise hospitals, ________(teach) doctors and nurses, and showed people how to give first aid. （所给词的适当形式填空）

7 . Children should be made________(understand)the importance of saving water. （所给词的适当形式填空）

8 . Look out for cars when________（cross）the street. （所给词的适当形式填空）

9 . I’d appreciate it if you can make helpful ________（评论）on my work. (根据汉语提示单词拼写）

10 . The man ________ is talking with my father is a policeman. (用适当的词填空)