Supple the correct form of the verbs in brackets "infinitive or V-ing": She would never (forget)_____ (see)_____ the Himalayas for the first time

Supple the correct form of the verbs in brackets "infinitive or V-ing":
1. She would never (forget)_____ (see)_____ the Himalayas for the first time.
2. It was an unpopular decision (postpone)_____ (build)_____ the new hospital.
3. Do you (remember)_____ (switch)_____ the lights off before we came out?
4. Have you ever tried (windsurf)_____? It's so funny.
5. He was too busy (talk)_____ (notice)_____ us (come)_____in