25. not to let her/ the children/ kids watch
26. make it illegal to drive
27. Tom/ he had left on/ in time OR Tom/ he had been on/ in time leaving
(conditional, check the 'if' at the beginning of the sentence!)
28. to be (a)thorough revision to/ of/ revising of
29. was a gradual rise/ increase/ improvement in
30. was of no consequence OR wasn't/ was not of (any) consequence