1. since I last went to an Indian restaurant
2. did Helen and Robert get married
3. rural polulation ratio continuously fell during this 60-year period
4. was a rise in the urban population from 25% to 45% between 1950 and 1980
5. looked up their number in the phone directory
6. but they turned down our offer
7. a long time to get over my illness
8. looking forward to my next holiday