1. my English teacher 
2. happy because their mother make cake for them
3. at home because she feels tired
4.a letter
5. teachers at secondary school
7. to the new house next week
8.  their Math  exam 
9. in my school bag

1 Mr.Hung is my teacher.
2. They feel upset about that story.
3. Hang is staying in a luxurious hotel.
4. Hoa's brother send her a letter.
5.  They become kind doctors
6. We are single.
7. My family will move to the USA
8. The students are doing their project
9. I put the book on the desk