Verbs that take both the Gerund and the Infinitive

A few verbs can take both the Gerund and the Infinitive (with a change in meaning)

Choose the option you think is correct

I regret __________ you that your application for the post has been unsuccessful.
informing
to inform
John is trying very hard to stop __________ .
smoking
to smoke
I don't know why the door was open as I can remember __________ it.
locking
to lock
Don't forget __________ all the doors!
locking
to lock
Try __________ them $500. You never know they might accept it.
offering
to offer
I do regret not __________ learned a foreign language when I was a child.
to have
having
Pete is trying __________ an internship at GM.
getting
to get
I'll never forget __________ Venice for the first time.
visiting
to visit
John stopped working __________ a cigarette.
to have
having
Did you remember __________ all the windows?
closing
to close