一、

1-5 DDBBB

6-10 DAAAB

11-15 BADBC

16-19 BBCA

二、

playing making   going   liking   writing

skiing carrying   lying     stopping   beginning

buying dancing   getting   singing   dying

三、

1.Where is ；reading

2.am looking forward to

3.looking for

4.preparing for

5.taking photos

6.What is；doing；is sending

7.Are you reading ；am not reading

8.Where are；playing

9.What are；doing

10.isn’t cleaning

四、

1-4 CDDB

五、

Dear fellow students,

Forests are important to the environment. We should plant more trees for the Earth.

At present, the coverage rate of forests in China is low, but the situation has improved in recent years. Trees can take in harmful air and keep the air fresh. Trees can prevent water and soil loss. To protect the Earth, people should take action as soon as possible.

I have some advice. First, people should plant more trees around the world. Second, people should stop cutting down too many trees.

Let’s try our best to protect the Earth!

【详解】[总体分析]

①题材：本文是一篇演讲稿；

②时态：时态为一般现在时；

③提示：写作要点已给出，考生应注意不要遗漏，适当增加细节完整表述内容。

[写作步骤]

第一步，介绍我国目前森林覆盖情况；

第二步，介绍植树的好处；

第三部，提出保护树木的建议。

[亮点词汇]

①be important to对……是重要的

②at present目前

③cut down砍伐

[高分句型]

①To protect the Earth, people should take action as soon as possible.（动词不定式表示目的）