Choose the correct option.
1 James fell asleep while he was reading / had been reading a book. 2 I was never eating / had never eaten Greek food before I went to Greece.
3 Although the TV was on, nobody was watching / had watched it.
4 Iwas driving home when I saw / had been seeing your brother at the bus stop.
5 He had waited / had been waiting for half an hour before his friends arrived.
6 She didn't hear / hadn't been hearing her phone because she was listening to her MP3.​