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