Ответ:

1. 1. stage;

2. character

3. costume

4. curtain

5. lights

6. audience

7. script

8. make-up

2. 1. cut

2. 's dropped

3. phoned

4. Have you

5. didn't learn

6. Did you go

7. I've played the piano

3. 1. yet

2. just

3. before

4. already

5. just

6. before

7. yet

8. already