1. I was writing an...
2. My little sister was sleeping...
3. My friends weren't doing... They were playing volleyball.
4. You were eating ice-cream...?
5. What your father was doing...?
6. Why she was crying...?
7. She was reading...
8. You were drinking...? - No, I wasn't drinking... I was eating a banana.
9. My sister is fond of reading. She was reading...
10. When I went out into the garden, the sun was shining and birds were singing in the trees.