四、句型转换。
1. We should use reusable bags to protect the environment.（对画线部分提问）
we use reusable bags ?
2. He has collected waste paper for recycling since 2020.（对画线部分提问）
has he collected waste paper for recycling?
3. People throw away millions of plastic bottles every day.（改为被动语态）
Millions of plastic bottles away every day.
4. She will finish the environmental report in three days.（对画线部分提问）
will she finish the environmental report?
5. We can reduce pollution by planting more trees.（对画线部分提问）
we reduce pollution?

1. What should; for
2. How long
3. are thrown
4. How soon
5. How can

1. 对目的状语（to do结构）提问用固定句型What...for，原句有情态动词should，需将should提前至主语we前，故填What should; for。
2. 对“since+时间点”（表时间段）提问用疑问词组How long，符合现在完成时的疑问句结构，故填How long。
3. 一般现在时被动语态结构为“am/is/are + 过去分词”，主语Millions of plastic bottles是复数，be动词用are，throw的过去分词为thrown，故填are thrown。
4. 对“in+一段时间”（表将来多久之后）提问用疑问词组How soon，适用于一般将来时，故填How soon。
5. 对方式状语（by doing结构）提问用疑问词组How，原句有情态动词can，需将can提前至主语we前，故填How can。

五、根据单词的首字母提示填空。
In a school some trouble was caused by the students, who were naughty（调皮的$）and didn't follow the school rules. They often fought with each other and they didn't f\underline{\quad 1 \quad} each other. One day, a new teacher came to this school. When he heard that, he came up$
$w\underline{\quad 2 \quad} a good idea. He told each of his students to b\underline{\quad 3 \quad} a clear plastic bag and a bag of potatoes to school. For every person they didn't want to forgive in their lives, they chose a potato, wrote the person's name on it, and put it in the plastic bag.$
$Some of their bags were very h\underline{\quad 4 \quad}. They were then told to carry this bag with them e\underline{\quad 5 \quad} for one week. They would put it beside their bed at night, on the seat when they s\underline{\quad 6 \quad} in a car or on a bus, and next to their desk at school. Days of carrying the bags a\underline{\quad 7 \quad} with them made students get to know what a weight they were carrying in their minds. And they had to pay so much attention to it all the time t\underline{\quad 8 \quad} they didn't forget it or leave it in embarrassing places. As time p\underline{\quad 9 \quad} by, the potatoes went bad and made people feel sick.$
Too often we think of tolerance（容忍）as a gift to other people, and it clearly is for ourselves! If we choose to keep our sadness and hatred（仇恨$）in our hearts, we will have to carry them around all our lives. After that, the students got on w\underline{\quad 10 \quad} with each other and didn't fight any more. Learn to forgive, and you will be happier at the same time.$
1. _________ 2. _________ 3. _________ 4. _________ 5. _________
6. _________ 7. _________ 8. _________ 9. _________ 10. _________

1. forgive 2. with 3. bring 4. heavy 5. everywhere 6. sit 7. around 8. that 9. passed 10. well

1. 根据语境“经常打架且不原谅彼此”，结合首字母f，填forgive；2. 固定搭配come up with（想出），结合首字母w，填with；3. 结合语境“带塑料袋和土豆”，首字母b，填bring；4. 装多个土豆的袋子很重，首字母h，填heavy；5. 老师让学生随身带袋子，首字母e，填everywhere；6. 坐在车里/公交车上，首字母s，填sit；7. 带着袋子到处走，首字母a，填around；8. 固定结构so...that...（如此...以至于...），首字母t，填that；9. 固定搭配pass by（流逝），时态为过去式，首字母p，填passed；10. 固定搭配get on well with（相处融洽），首字母w，填well。