I must not forget (completing / to complete) homework.
I must not forget to complete homework.
Michael tried (to study / studying) yesterday but he was so very tired.
Michael tried to study yesterday but he was so very tired.
I won't forget (to see / seeing) my daughter for the first time.
I won't forget seeing my daughter for the first time.
Why don't you try (using/ to use) Spotify?
Why don't you try using Spotify?
Students try (to understand/ understanding) Algebra, but it's quite difficult.
Students try to understand Algebra, but it's quite difficult.
I think I need (going / to go) to the toilet.
I think I need to go to the toilet.
I remember (to paint / painting) a house when I was at kindergarten school.
I remember painting a house when I was at kindergarten school.
Please, try (to restart / restarting) your wifi router.
Please, try restarting your wifi router.
Pamela needs (to see / seeing) the doctor as soon as possible.
Pamela needs to see the doctor as soon as possible.
The car needs (to wash / washing)
The car needs washing.
Remember (turning off / to turn off) the TV before you leave home.
Remember to turn of the TV before you leave home.