D Choose and write（选择合适的词组补全句子）
eat up go green turn off
walk to both sides the Earth
1. —What will you do to help ?
—I’ll go plogging.
2. We will the birthday cake this evening.
3. I will from now on. I will use a cloth bag.
4. Please remember to the lights before you go home.
5. Sam always writes on of the paper.
6. When the weather is good, we often school.

1. the Earth 2. eat up 3. go green 4. turn off 5. both sides 6. walk to

【分析】首先明确各词组含义：eat up（吃光）、go green（践行绿色生活）、turn off（关掉）、walk to（步行去）、both sides（两边）、the Earth（地球）；再结合每句语境分析所需词组：1. 问句问帮助的对象，回答是环保行为，对应the Earth；2. 句子涉及生日蛋糕，对应eat up；3. 后文提到用布袋，属于绿色生活，对应go green；4. 与灯搭配，对应turn off；5. 描述纸的书写位置，对应both sides；6. 说明去学校的方式，对应walk to。
【解析】1. 句意为“你会做什么帮助地球？”，plogging是环保活动，故填the Earth；2. 句意为“今晚我们会吃光生日蛋糕”，eat up符合语境；3. 句意为“从现在起我要践行绿色生活，我会用布袋”，go green指环保行为，符合；4. 句意为“回家前记得关灯”，turn off表示关掉电器，符合；5. 句意为“Sam总是在纸的两边写字”，both sides指两边，正确；6. 句意为“天气好的时候，我们经常步行去学校”，walk to表示步行前往，符合。
【答案】1. the Earth 2. eat up 3. go green 4. turn off 5. both sides 6. walk to
【知识点】动词短语运用、语境选词、名词短语搭配
【点评】本题为基础选词填空题，考查常用词组的含义及语境匹配，难度较低，学生掌握词组意思并结合语境即可完成。
【难度系数】0.8

E Read and circle（读句子，圈出画线部分发音不同的单词）
1. The farm worker has a short horse.
2. The doctor does sport every morning to keep healthy.
3. There is a difficult word in this short story.

1. worker 2. doctor 3. word

【分析】本题为英语单词发音辨析题，需对比每组三个单词中画线部分（均为字母组合or）的发音，找出读音不同的单词。解题时，先准确读出每组单词，确定or的发音，再逐一对比排除，即可找到答案。
【解析】1. 第一组：worker中or发音为/ɜː/，short和horse中or发音均为/ɔː/，故发音不同的是worker；2. 第二组：doctor中or发音为/ə(r)/，sport和morning中or发音均为/ɔː/，故发音不同的是doctor；3. 第三组：word中or发音为/ɜː/，short和story中or发音均为/ɔː/，故发音不同的是word。
【答案】1. worker 2. doctor 3. word
【知识点】英语单词发音辨析，字母组合or的发音
【点评】本题考查常见字母组合or的不同读音，属于基础辨音题型，侧重考查学生对单词发音的掌握情况，难度不大。
【难度系数】0.5

F Read and order（连词成句，注意大小写并加标点）选做题
Liu Tao and his family are talking about what to do for Earth Day.
Mum: Earth Day is coming. (1)
(the Earth, let's, to help, do something)
Liu Tao: (2)
(when, I, the tap, I'll, turn off, brush my teeth)
What will you do, Dad?
Dad: I want to save paper. (3)
(the paper, I'll, use, both sides, of)
Liu Tao: That's a good idea. I'll do that too. What about you, Mum?
Mum: I'll use a cloth bag when I go shopping.
Liu Hao: (4)
(my food, I'll, eat up, try to)
Mum: Wonderful! Let's try to do these things every day.
Liu Tao: Sure! I'll start right now.

1. Let's do something to help the Earth.
2. I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. I'll use both sides of the paper.
4. I'll try to eat up my food.

【分析】
本题为连词成句题，需根据所给词汇，结合句子结构（祈使句、时间状语从句、一般将来时陈述句），注意时态、语序、大小写及标点，将词汇组合成通顺正确的句子。
【解析】
1. 所给词汇为“the Earth, let's, to help, do something”，“let's”后接动词原形构成祈使句，“do something”为动词短语，“to help the Earth”表目的，组合为：Let's do something to help the Earth.
2. 所给词汇为“when, I, the tap, I'll, turn off, brush my teeth”，“when”引导时间状语从句，主句用一般将来时（I'll turn off the tap），从句用一般现在时（I brush my teeth），时间状语可放句首或句尾，组合为：I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. 所给词汇为“the paper, I'll, use, both sides, of”，一般将来时结构“主语+will+动词原形”，“use both sides of the paper”为动词短语，组合为：I'll use both sides of the paper.
4. 所给词汇为“my food, I'll, eat up, try to”，一般将来时结构“主语+will+try to do sth”，“eat up my food”为动词短语，组合为：I'll try to eat up my food.
【答案】
1. Let's do something to help the Earth.
2. I'll turn off the tap when I brush my teeth. / When I brush my teeth, I'll turn off the tap.
3. I'll use both sides of the paper.
4. I'll try to eat up my food.
【知识点】
连词成句、一般将来时、时间状语从句
【点评】
本题考查连词成句的基础能力，需掌握祈使句、时间状语从句的语序及一般将来时的结构，注意大小写和标点，是英语学习中的基础题型。
【难度系数】
0.5