1. The last time she went out with him was 9 months ago.
`>` It is 9 months since she last went out with him.
2. Jane never studied French well when she was a student.
`>` Jane used to study French badly when she was a student.
3. The girl is my younger sister. She is playing in the garden.
`>` The girl playing in the garden is my younger sister.
4. She left university two years ago.
`>` It is 2 years since she left university.
5. She couldn’t join us because she was busy.
`>` She was busy so she couldn't join us.
6. “Do your parents live near here, Ha?” asked Nam
`>` Nam asked if Ha's parents lived near there.
7. I don’t have a map, so I can’t show you the way.
`>` If I had a map, I could show you the way.
8. New York is a wonderful city. I always want to visit it.
`>` New York is a wonderful city, so I always want to visit it.
9. Hurry up or we will be late for the concert.
`>` If we don't hurry up, we will be late for the concert.
10. I haven’t seen my brother for a month.
`>` I didn't see my brother a month ago.