1, He is on the fifteenth page of the report he's typing --> So far he has written fourteen pages of the report
2, My English friend finds using chopsticks difficult --> My English friend isn't good at using chopsticks.
3, That car's so expensive, I don't think I can buy it --> It's such an expensive car that I don't think I can buy it.
4, I've never heard a more amusing story than this one --> This is the most amusing story I've never heard.
5, We admired him because of his great ability --> Because he had great ability, we admired him.
6, They clean the streets twice a day --> The streets are cleaned twice a day.
7, Although Lan was sick, she still came to class --> Inspite of being sick, Lan still came to class.
8, My mother began working as an English teacher in 1997 --> My mother has worked as an English teacher since 1997.
9, What are you reading now, Mary, said the teacher --> The teacher asked Mary what she was reading then.
10, The number of foreign tourists to Vietnam has greatly increased over the last few years --> There has been a great increase in the number of foreign tourists to Vietnam over the last few years.
11, He has never been late for work --> Never has he been late for work.
12, The man is my new boss. He is talking to the lady over there --> The man who is talking to the lady over there is my new boss.
13, Does Mr. Pike live here? The postman asked the boy --> The postman asked the boy if / wheter Mr. Pike lived there.
14, They will build a new school next month --> A new school will be built next month.
15, Finding an apartment in a big city is not easy --> It is not easy / difficult to find an apartment in a big city