42, Unless you pass your exam, you won't get into university.
43, He worked so hard to make a success of his business.
44, I was bored with the film.
45, Despite the fact that the wind was cold this morning, we went for a walk.
47, Although Uncle Tom used to smoke, he seems to be in good health.
50, The old house where no one lived there, burned down last week.

46, I haven't been to Ho Chi Minh City since 2009.
47, If I were you, I would be more truthful in future.
48, Maria suggested having a picnic naxt Sunday.
49, The wanted man is believed to be living in New York.
50, The picture was too expensive for us to buy.

41, Although this part of the city is very noisy, I enjoy living there.
42, I wish these shops didn't close at lunch-time.
43, She asked me if I had a good time abroad last week before.
44, Nam suggested going on a picnic the day after tomorrow.
46, Although it was not her job, Anna took out the trash.