Were you aware _____ the regulations against smoking in this area?

She returned ____ China after spending much time abroad.

He is retired. He lives________________ his pension.

She was confused (with/on/about/in) the dates.

I’ll be at home ........... Friday morning. You can phone me then.

I'm terrified ..... breaking down on a motorway at night.

Sue isn’t usually here .................. weekends. She goes away.

Why were you absent ____________ class this morning?

Today, women are increasingly involved ....... the politics.

Four-fifths of the world's computers use programs (at/in/on/about) English.

She saw a butterfly .......... the window.

We are grateful (at/in/on/to) our teacher.

Are you acquainted ___________ this man?

That singer has become very popular (at/with/to/of) the youth.

He insisted ______ taking us dinner.

......... one enemy he has 50 friends.

We watched television ........... two hours last night.

Your plan is similar ___________ his.

Our flat is ....... the second floor of the building.

Clean air is necessary ........... our health.

Don't you think you should try to be friendly ... your classmates?