【简答题】

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 of good soil．Now green tree have been substituted with the poor houses and tall buildings for the brickyard．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．