Question

短文改錯。
     假如英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中
共有10處語言錯誤，每句中最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。
增加：在缺詞處加一個漏字符號，并在其下面寫出該加的詞。
刪除：把多余的詞用斜線劃掉。
修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。
注意：
1.每處錯誤及其修改均僅限一詞；
2. 只允許修改10處，多者(從第11處起)不計分。
     Great changes have been taken place in my village.Ten years ago, the small and low houses, which
lie on the north of a lake, produced much waste.As the result, the lake was serious polluted.To the west
was a sandy field, that was the source of dust.Better still, a brickyard on the southwest side of the lake
used up a great deal good soil.Now the poor house have been replaced by green trees and the brickyard
by tall buildings.The sandy field that the villagers used to ploughing has been covered with fruit trees.On
the lake the villagers often spend his spare time boating and fishing.
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Answer 1

     Great changes have been taken place in my village.Ten years ago, the small and low
                                1. 去掉
houses, which lie on the north of a lake, produced much waste.As the result, the lake
                  2. lay                                                                          3. a
was serious polluted.To the west was a sandy field, that was the source of dust. Better 
     4. serously                                                      5. which                               6. worse
still, a brickyard on the southwest side of the lake used up a great deal∧ good soil.Now
                                                                                                       7. of
the poor house have been replaced by green trees and the brickyard by tall buildings.
          8. houses
The sandy field that the villagers used to ploughing has been covered with fruit trees.On
                                                             9. plough
the lake the villagers often spend his spare time boating and fishing.
                                             10. their