She said to me “why don’t you relax___________ a while?”

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

You don't like it, do you? ... the contrary, I love it.

I was standing .......... the back, so I couldn’t see very well.

Let's drink .......... his success.

The children are excited ________ going to the circus.

The dog ran .......... the house.

He didn’t even have the intelligence to call _________ an ambulance.

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

The participants must find _______________ all the answers in order to go in the next round.

.......... mistake, I took the wrong book from my desk this morning.

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

Contrary ......... what most people used to believed, these minerals are not renewable.

_______ general, I found zoology to be an easier subject than botany.

He walked .......... the room .......... which we were sitting.

She always takes good care_______ her children.

Plant and animal extinction leads _________ loss of biodiversity.

He was .......... himself with rage.

There’s really no need for you to be afraid ___________ the examination.

He had learned the whole poem _____ heart.

Mrs. Brown is often worried ___________ money.