一、根据中文意思完成句子。
1. 每个人都应该对我们所居住的星球负责。
Everyone should the planet on which we live.
2. 许多学生上周末在公园里植树来度过这段时光。
Many students their weekend trees in the park last week.
3. 你可以在学校网站上报名参加“清洁河流”活动。
You can the “Clean Up the River” activity on our school website.
4. 我们班级在回收利用和节约能源方面非常积极。
Our class very recycling and saving energy.
5. 照顾好企鹅对动物管理员来说是很重要的。
It is important for the zookeeper to penguins in the zoo.

1. be responsible for
2. spent; planting
3. sign up for
4. is; active in
5. take care of

【分析】
本题为根据中文意思完成句子的题型，解题思路为：先根据中文含义确定空格处需填的核心英语短语，再结合句子的时态、固定搭配结构（如情态动词后接动词原形、spend...doing sth等）、主谓一致等语法规则，调整短语的正确形式填入空格。
【解析】
1. 中文“对……负责”对应固定短语be responsible for，情态动词should后接动词原形，故填be responsible for。
2. 时间状语为last week，句子用一般过去时，“度过时间做某事”的固定结构为spend...doing sth，故填spent；planting。
3. 中文“报名参加”对应固定短语sign up for，情态动词can后接动词原形，故填sign up for。
4. 中文“在……方面积极”对应固定短语be active in，主语our class为单数，句子为一般现在时，be动词用is，故填is；active in。
5. 中文“照顾好”对应固定短语take care of，固定结构it is important for sb to do sth中to后接动词原形，故填take care of。
【答案】
1. be responsible for
2. spent; planting
3. sign up for
4. is; active in
5. take care of
【知识点】
固定短语搭配、动词时态、非谓语动词
【点评】
本题考查初中英语常用固定短语及基础语法（时态、主谓一致等）的运用，属于基础题型，需学生平时积累常见短语搭配，掌握短语的固定结构和时态变化，难度适中。
【难度系数】
0.7

二、补全对话。
根据下面的对话情景，在空白处填入一个适当的句子，使对话意思连贯、完整。
A: Hey, did you see the poster about the World Earth Day activities?
B: Yes! Our school is really eager to organize these events this year.
1.
A: Me too! We can spend the morning collecting litter there. Everyone should take the responsibility of keeping our city clean.
B: That's true. I heard there's also a tree-planting group.
2.
A: Perfect! Not only can we help the environment, but we can also learn a lot of useful things. Can we join both?
B: I think it's OK! Let's check the sign-up sheet.
3.
A: Good idea. A great number of volunteers will make a bigger difference.
4.
B: Exactly. Even small acts matter a lot. So, are we meeting at the school gate on World Earth Day morning?
A: Sure!
5.
See you then!
B: See you! Let's do our part.

1. I want to sign up for the park clean-up.
2. They need people to take care of the new young trees afterwards.
3. We should also call on more classmates to join us.
4. It's our duty to protect the Earth.
5. Let's spare no effort to make it a successful day.

【分析】
这是一道补全对话题，解题时需先通读对话把握核心话题（世界地球日的校园环保活动），再结合每处空白的前后语境、对话双方的逻辑衔接推导合适的句子：1. 空白1前A提及早上捡垃圾，后A回应“我也是！我们可以上午在那捡垃圾”，故空白1应表达想报名公园清理活动；2. 空白2前B提到有植树小组，后A说“既能助力环保又能学有用的东西”，故空白2应说明植树小组的需求；3. 空白3前B说要查报名单，后A说“大量志愿者能带来更大改变”，故空白3应表达号召更多同学加入；4. 空白4前A问能否都参加，后B说“小行动也很重要”，故空白4应表达环保的责任；5. 空白5前约定在校门口集合，后B说“再见”，故空白5应表达尽力让活动成功。
【解析】
根据对话语境及逻辑，逐句补全：
1. 结合A提到的捡垃圾活动，B应说想报名公园清理，即“I want to sign up for the park clean-up.”；
2. 结合植树小组的话题，B应说明植树组需要人照顾新树苗，即“They need people to take care of the new young trees afterwards.”；
3. 结合A提到志愿者多的好处，B应建议号召更多同学加入，即“We should also call on more classmates to join us.”；
4. 结合B提到小行动重要，A应表达保护地球是责任，即“It's our duty to protect the Earth.”；
5. 结合约定见面的语境，A应说尽力让这天成功，即“Let's spare no effort to make it a successful day.”。
【答案】
1. I want to sign up for the park clean-up.
2. They need people to take care of the new young trees afterwards.
3. We should also call on more classmates to join us.
4. It's our duty to protect the Earth.
5. Let's spare no effort to make it a successful day.
【知识点】
补全对话；日常交际用语；环境保护话题
【点评】
本题围绕世界地球日的校园环保活动展开，考查学生在具体语境中运用日常交际用语的能力，要求结合上下文逻辑和话题主题作答，贴近学生生活实际，难度适中，能有效检验学生的英语交际运用能力。
【难度系数】
0.5