20. In the Twelve Chinese Zodiac Signs (十二生肖), the snake is the sixth animal the zodiac order.
21. You should write down your ideas in order time so that the story is clear.
22. I called the restaurant yesterday and ordered a big pizza my sister so that we could enjoy a nice dinner together.
23. The manager issued ① order for the team ② (prepare) a report as soon as possible.
24. 短视频：是乐趣还是陷阱？ Short-video apps are popular among teenagers. They bring us pleasure, but using them too much has a bad influence on students' studies and sleep. So some schools order students ① (set) a daily time limit in order ② (keep) a balance.
25. 用order的不同结构完成句子
The doctor (嘱咐我卧床休息三天). I (遵循医嘱) and soon recovered.

· We must keep things in good order at school. 我们在学校里必须保持物品整齐有序。
· I want to order some food online for my grandparents. 我想在网上给爷爷奶奶点些食物。
· Please arrange these sentences in the right order. 请把这些句子按正确顺序排列。
· The policeman ordered the crowd to leave the dangerous place at once. 警察命令人群立刻离开这个危险的地方。

20. in
21. of
22. for
23. ①an ②to prepare
24. ①to set ②to keep
25. ordered me to stay in bed for three days; followed/took the doctor's order