Gerund vs infinitive verb forms

We were keen on _____ the show.

He spent a lot of time _____ before the concert.

I don't remember _____ you in our office before.

I'm sorry, I forgot _____ you yesterday.

The firemen are trying _____ out the fire.

We are sorry for _____ you waiting.

Bob stopped _____ up his car before continuing his journey to Cracow.

Alison regretted _____ at her younger sister.

The students went on _____ the test for another hour.

Being a teacher means _____ up a lot of homework.

Why don't you try _____ some milk to your coffee?

I'm sorry _____ this, but you've failed your exam.

The pupils stopped _____ when the teacher entered the classroom.

I regret _____ you that we can't return you the money.

The secretary talked on the phone and went on _____ some documents.

He didn't mean _____ you.

Tom;s sister loves _____ after children.

My mother makes me _____ my room twice a week.

My Dad refused _____ me his car.

You'd better _____ Peter to help you.

Pamela was happy _____ the prize.

Julia let little Annie _____ to the beach because it was warm enough to swim.

The newspaper offered _____ for the article.

Amanda prefers _____ her summer holidays at the seaside.