You should concentrate _________what the interviewer is saying and make a real effort to answer all the questions the interviewer asks.

Most of the streets were named __________ national heroes.

One meter is approximately equal _______ a yard.

“Are you .............. this photograph?” “Yes, that’s me, ............. the left.”

Due to industrialization, we have to cope ... the fact that many  species are ......... danger ........ extinction.

Helen had said goodbye to everybody in the class _____ she left for the hometown.

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

There were .......... 100 people at the meeting.

Is the United States the wealthiest country ______ the world?

This movie is based ________ a true story.

I’m going away .......... the end of February.

Are you worried _____ the final examination?

The bus was late this morning but it’s usually .............

The initiative for founding the Red Cross came _____ a Swiss man called Jean Henri Dunant.

_____ the children left, the house was very quiet.

It looks better .......... a distance.

Can you help me, please? I can't see the differences .......... these words.

Was your choice of research topic acceptable _____ your instructor.

She has a promising future ahead ............ her.

I'm not acquainted (at/in/with/of) those flowers.

Mrs. Liz was accused _______ having stolen the car.