Trees are useful things to man in three important (way) they give us wood and other useful things, they give us cool places, they help to stop drought and flood.
Unluckily, in many parts of the world, man has not found that third of these points is the most important. Man wants to make money from trees, so he has cut them down large numbers, only to find that without them he has lost the best friends he had. And also, he is usually too careless (plant) and look after new trees. So the forests (slow) disappear.
This does not only mean that man will have fewer trees. The results are even (bad) : for where there are trees, their roots break up soil allowing the rain to sink in and also bind (固定) the soil, thus preventing it from (wash) away easily; but where there are no trees, the rain (fall) on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing (leave) but useless desert.
三年前：一座教学楼, 一个操场, 学生1 000多人
现在：
1）校园扩建：新建了一座教学楼和一座图书馆, 教学楼内有音乐室、美术室、微机房等；
2）学生人数：增加到了2 000多人；
3）体育设施与音乐器材配备齐全；
4）绿化了校园。
注意：
1）词数80左右；
2）可适当增加细节, 以使行文连贯；
3）开头和结尾已给出, 但不计入总词数。
核心要点提示：
①As is known to all ②no longer
③in use ④be equipped with
⑤facility ⑥musical instrument
⑦the number of
Dear Joy,
I was pleased to hear from you and I'm writing to tell you something about the changes in my school.
……
Yours,
Li Hua
