What was the party like last night , Jean ?   Not bad at all , thanks . There were one or two interesting people there.Why couldn't you come ?   Well , I couldn't get away from work early . And when . I got home I had a headache , so I had to go straight to bed . But I was over-tired , because I wasn't able to get to sleep for hours .   What a shame . Why didn't you take a sleeping pill ?   I don't like them . I used to take them when I had to work overtime , you know .   How many did you use to take ? 