Объясните различие в значении следующих предложений:
1.
a)Fiona forgot to lock the door.
b)Fiona will never forget seeing the massive wave of water. 2.
a)Remember to pay the water bill tomorrow!
b)don't remember meeting you before.
3.
a)He stopped to buy some bread from the baker's.
b)He stopped working on this project a month ago.
4.
a)She tried to help the mountain gorillas.
b)She tried wearing contact lenses, but after a while she decided to go back to glasses.