1 - Alex is neither short nor tall; he was ___ of on average height.

2 - What are you going to buy Marcia ___ for in her birthday?

3 - The police are looking ___ at for a tall, black man who was seen standing outside the bank just before the robbery took place.

4 - The teacher asked the class to do the exercise ___ on at the bottom of page 12.

5 - As a child he was always ashamed ___ for of himself because his family was so poor.

6 - I was always very good ___ at with History when I was at school.

7 - My uncle specializes ___ for in   ELT at Oxford University.

8 - We arrived ____ in at the station in the morning.

9 - I didn't see you ____ on at the party on Saturday.

10 - I hate those people who beat and swear ____ in during the football matches.

11 - He saw her as the most attractive woman ____ in on the world.

12 - Carlos is completely useless ____ of at sports, especially football.