1. Dog is my favorite animal because they are good companions of people

2 . I don’t like jazz (while/whereas) a friend of mine is a fan of it

3 . Although they were stuck in the traffic for hours, they managed to get there on time

4 . I came to the party after everyone was leaving

5 . This time Jane works very hard because she doesn’t want to fail the exam again

6 . I seldom do exercises although doing exercises is good for my health

7 . Although my computer is old-fashioned, it functions very smoothly

8 . I didn’t know her real name because people always called her by her nickname

* but là liên từ đẳng lập và ko dùng cho câu phức.