II. REWRITE
1, She was sick, so she went to bed early.
2, They have opened two trading centers here this year.
3, He became a university professor ten years ago.
4, Mai who likes playing piano lives on Nguyen Hue Street.
5, She went to bed because she was tired.
6, If you study hard, you won't fail the exam.
7, Although she was hungry, she didn't eat much.
8, The crops were not good because there weren't enough rain last year.
9, He suggests going fishing.
10, The chair which we are sitting on is made of wood.
11, If I were rich, I would live in a big house.
12, Minh told me that he wouldn't be home this evening because he had to work late.
13, She asked me that If I was going to take the level exam this weekend.