一、活动开始前，新成员Cindy和Betty谈论起树木对人类的重要性。根据对话内容，从下面的方框中选出适当的选项补全她们的对话。
Cindy: Do you know how trees help us?
Betty: 1. Trees keep the air cool and clean. They take in harmful gases and produce O₂ for us to breathe.
Cindy: 2.
Betty: Yes. They also make our lives more convenient. Many daily things are made of trees, like chopsticks and pencils.
Cindy: In fact, we get a lot more than these. 3. Tea also comes from the leaves of trees.
Betty: I can't imagine a world without trees.
Cindy: Neither can I. 4. But millions of trees are cut down every year.
Betty: 5.
A. In many ways.
B. We should take action now!
C. Fruit and oil are trees.
D. They are very important to humans.
E. So they are fighters against air pollution.

1. A
2. E
3. C
4. D
5. B

我们可以根据上下文语境逐一匹配选项：
1. 第一空的问句询问树木如何帮助人类，后文开始列举树木的具体作用，A选项“在很多方面”直接回应问题，引出下文的具体说明，符合语境。
2. 第二空前文提到树木可以吸收有害气体、净化空气，E选项“所以它们是对抗空气污染的斗士”是对前文内容的总结，后文Betty用Yes回应并引出树木的其他作用，逻辑连贯。
3. 第三空前文表示我们从树木处获得的东西远不止之前提到的物品，后文举例茶叶来自树叶，C选项“水果和油料都来自树木”是补充列举树木给人类的馈赠，符合语境。
4. 第四空前文两人都表示无法想象没有树木的世界，后文转折提到每年有数百万树木被砍伐，D选项“它们对人类来说非常重要”承接前文对树木的肯定，同时为后文的转折做铺垫。
5. 第五空前文提到大量树木被砍伐的现状，B选项“我们现在应该采取行动了！”是对话最后针对现状发出的保护树木的呼吁，符合整体对话逻辑。

二、活动开始了，Amy 向大家分享了她帮助朋友的经历。阅读下面的短文，在空白处填入一个适当的单词或括号内所给单词的正确形式，补全她的故事。
Last month, my classmate Lily was absent from school for a week. We all wondered why she didn't come. Later, we 1. (tell) that she had an 2. (ill) and needed 3. (treat) at home.
One afternoon, I decided to visit her with some notes. When I arrived at her home, she looked a little sad. She said she was 4. (disappoint) because she missed many lessons. “Excuse 5. (I), could you please help me with my maths?” she asked politely. I nodded and spent two hours explaining the key points to her. I told her 6. she could ask me any questions whenever she wanted. During the visit, Lily's mum prepared some snacks for us, and the 7. (warm) from them made me feel happy.
A few days later, Lily returned 8. school. With my help, she caught up with the class quickly. She said I was a lucky star for her. We all know that a small help can make a big 9. (different). Problems can always be solved with kindness, and love 10. (pass) on if we are willing to help others.

1. were told
2. illness
3. treatment（或treating / to be treated）
4. disappointed
5. me
6. that
7. warmth
8. to
9. difference
10. will be passed

1. 此处主语we和动词tell是被动关系，意为“我们被告知”，结合时间状语Last month可知用一般过去时的被动语态，结构为were/was+过去分词，主语是we，be动词用were，tell的过去分词为told，故填were told。
2. 不定冠词an后需接名词，ill是形容词，其名词形式illness表示“疾病”，have an illness意为“生病”，故填illness。
3. 此处表示“需要在家接受治疗”，need后可接名词作宾语，treat的名词形式是treatment；也可用need doing/to be done结构表被动含义，符合语法规则，故填treatment/treating/to be treated。
4. 此处be动词后需用形容词作表语，修饰人she，表达“感到失望的”，disappoint的形容词形式disappointed符合语境，故填disappointed。
5. 固定日常交际用语Excuse me意为“打扰一下、不好意思”，是常用礼貌表达，故填me。
6. 此处引导宾语从句，从句语义和结构完整，用引导词that即可，故填that。
7. 定冠词the后需接名词，warm是形容词，其名词形式warmth表示“温暖”，符合语境，故填warmth。
8. 固定搭配return to school意为“返回学校”，介词to表示方向，是固定用法，故填to。
9. 固定搭配make a big difference意为“产生很大影响、有很大作用”，different的名词形式是difference，故填difference。
10. 此处love和动词短语pass on是被动关系，if引导的条件状语从句遵循“主将从现”规则，主句用一般将来时的被动语态，结构为will be+过去分词，pass的过去分词为passed，故填will be passed。