1, I have learnt Spanish for 3 years.

2, my friends have difficulty in understanding Australian’s accent.

3, Because of his sickness, Tim didn’t join the summer camp.

4, When you were young, were you able to speak English?

5, Three hundred students took part in the swimming competition last year.

6, North Pole is so cold that humans cannot live there.

7, We last saw Barak six months ago.

8, I am looking forward to seeing the sights in London.

9, Can you tell me when your plane lands tomorrow?

10, Jim advised me to take part in the summer camp in Canada.