33. It may rain hard this afternoon, so take the raincoat with you 
---> In case___ it may rain hard this afternoon, you should take the raincoat with yọu_
34. She had to do washing up but the didn't
---> She forgot___doing washing up_
35. English is easy to learn
---> It__is easy to learn English__
36. Don't leave the lights on all night, you will waste electricity
----> If__you leave the lights on all night, you will waste electricity _

33. In case  it may rain hard this afternoon, you should take the raincoat with yọu
34. She forgot to do the washing up
35. It easy to learn English
36. If you leave the lights on all night, you will waste electricity