18 comes

19 don't worry (допустим вариант - aren't worried)

20 has left

21 have to (допустим вариант - will have to)

22 heavier

23 are trying (допустим вариант - try)

24 have (already) been introduced

25 their

26 better

27 governments

28 motorists

29 them

30 Unfortunately

31 employees

32 highly