He must have been late for the conference yesterday, _______?
She was so amused with the magician’s tricks that she ________ a smile.
They believe that there is __________ in the world.
The old man lives in the _______ island_______, but he doesn’t feel ______.
---Was it the new school headmaster who walked by ?--- _____.
Have you really realized the part computers have_______ in the daily life?