Have you tried ... a pill to help you sleep?
taking
to take
We tried ... the top of the mountain, but we had to turn back because of the bad weather.
reaching
to reach
I need ... the helpline. My computer has crashed.
to call
calling
I'm sure my keys are somewhere. I can remember ... the door this morning.
locking
to lock
Did you remember ... your sister a card? It's her birthday today.
to send
sending
Your hair needs ...
to cut.
cutting.
Our house needs ... Do you know any good house painters?
to paint
painting
I had to run home because I had forgotten ... the oven off.
turning
to turn