1. She was here yesterday is a nurse.

N (người) + who + V 

2. This is a mobile phone which I bought on Le Duan Street.

N (vật) + which + V / S +V 

3. Mis Hoa, who sings well, is my English teacher.

N (người) + who + V 

4. The books which are on the top of the shelf are novel.

N (vật) + which + V / S +V 

5. Although she is careful, she breaks the vase.

6. Even though Mai is very busy all day, she must come there.

7. Although the traffic light turned red, he didn't stop his car.

Although / Even though + clause, clause: mặc dù 

8. He tries not to eat chocolate because he doesn't like it.

9. Because we were too tired, we decided not to go out for meal.

Because + clause, clause: bởi vì 

`color{orange}{~MiaMB~}`