请在句子播放一遍后自行暂停，在1分钟内听写下来（多写不扣分）并核对以下答案：

21 All the equipment must be returned to the laboratory by Wednesday.

22 The new biology course will be starting in February.

23 These regions were both areas of economic development.

24 If you need a parking ticket, see me after the lecture.

25 There is an overlap between chemistry and other subjects.

26 International aid programs have been reduced by the new government.

27 The sociology exam will take place in week thirteen.

28 The study of history can provide unique insight.

29 Many cities are actively working on ways to reduce air pollution.

30 The digital revolution has changed the way we read.

31 Many companies use personality tests in interview process.

32 Having snow means no flight can take off or land.

33 You must inform your professor if you are absent in your class.

34 Students should take the training course to use the gym.

35 The media play a significant role in shaping public opinion.

36 The teaching staff are actively engaged in original research.

37 Businesses must obey contemporary general regulations.

38 The commissioner will portion the funds to all sovereignties.

39 Essays and assignments spread out across the academic year.

40 Restrooms are down the entrance and to the right.