The children are excited ________ going to the circus.

He is looking .......... his glasses.

If you don't know the meaning of the word, look it __ in the dictionary.

No one knew precisely what would happen _____________ a human being in space.

She was very surprised ________ the grade she received.

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

The roofs are covered ............. red tiles.

As I was ....... of the change in the program, I arrived half an hour late for the rehearsal.

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

Why don't you ask_____________ a pay increase?

He suffers .......... headaches.

Mr. Johnson said he was ......... favor of doing the work right away.

He’s very brave. He’s not afraid ............ anything.

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

What do you often do ............ the evening?

He succeeded ________ getting a scholarship.

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

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

Mrs. Brown is often worried ___________ money.

She has become very famous .......... her novels.

We benefit greatly ____________the medicines and other products that biodiversity provides.