Mn ơi giúp mình với, mai mk học r

1.I had a bath, I went to bed

-> After I'd had a bath, I went to bed.

2.. I read the letter. I threw it away. (when)

->When I had read the letter I threw it away.

3. He bought a car as soon as he had passed his driving test.

4.I took the book back to the library when I had finished reading it.

5.I didn’t go to bed until I had done my homework.

6.When I had spent all my money I went home

7.I had read the book before I saw the film

8.She started writing after her children had left home