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Ex2/
1. excited
2. annoyed
3. boring
4. interesting
5. shocked
6. fascinating
7. fascinating/fascinated
8. disappointed
9. terrifying
10. terrifying/shocked

11. amusing/amused
12. tired/tiring
Ex3/
1. It was not until 1915 that cinema became an industry..
2. It was not until my son was 5 that he started talking.
3. It was not until she was 35 that Lan went abroad.
4. It was not until midnight that we went to bed.

5. It was not until their teacher came that the boy stopped singing.
6. It was not until she received a letter from him that she wrote to him.
7. It was not until yesterday that the letter arrived.
8. It was not until last summer that we had a holiday.
9. It was not until the end of last summer that we finished it.
10. It was not until her mother came home that the chile went to sleep.
11. It was not until he felt too tired that he stopped working.
12. It was not until the last visitor left that the little girl opened the gifts.
13. It was not until he went to HCM city that he was a famous singer.
14. It was not until we began primary school that we studied English.
15. It was not until 2002 that I learned English.