Is the United States the wealthiest country ______ the world?

This book is based _____ part on fact.

If there was a technical failure, Gagarin might never get __________ to the Earth.

May I introduce you .......... Mrs Brown?

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

That house reminds me .............. the one where I used to live.

Did you go on holiday ... yourself?

He wore a hat, which made him look _______________ a spy.

......... the most part, his explanations are quite easy to understand.

Last night I was invited ___ a formal get-together and I enjoyed myself a great deal.

He spoke .......... a whisper.

Miss White was very upset .......... the news of her father's death.

He succeeded ________ getting a scholarship.

We need to set ___________ early tomorrow.

I cannot do it .......... you.

Fred is capable ____________ doing better work than he is doing atpresent.

He has been absent ____ school very often lately.

If you want to lose weight, you must go ___________ a diet.

I prefer this chair .............. the other one. It’s more comfortable.

He was accused _____________ having stolen a car.

Boys! Put your toys ............ It is time to go to bed. Don't stay ............. late.