Gerunds or Infinitives p.142 - ex.b

I'll never forget ___ the Grand Canyon for the first time. (to see)

I need ___ the helpline. My computer has crashed. (to call)

Have you tried ___ a tablet to help you sleep? (to take)

I must have my keys somewhere. I can remember ___ the door this morning. (to lock)

I had to run home because I had forgotten ___ the oven off. (to turn)

Our house needs ___. Do you know any good house painters? (to paint)

Did you remember ___ your sister a card? It's her birthday today. (to send)

We tried ___ to ski last winter, but we weren't very good at it. (to learn)