Explain what the difference in meaning is in the sentences below.

Explain what the difference in meaning is in the sentences below. Check in the Grammar Reference section.
1nbsp; nbsp;
a Fiona forgot to lock the door.
b Fiona will never forget seeing the massive wave of water.
2nbsp; nbsp;
a Remember to pay the water bill tomorrow!
b I dont remember meeting you before.
3nbsp; nbsp;
a He stopped to buy some bread from the bakers.
b He stopped working on this project a month ago.
4nbsp; nbsp;
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.