Some people claim the rumor that some Egyptians are planning a 100,000 people anti-government protest．
| A．to overhear | B．to have overheard |
| C．having overheard | D．to be overheard |
__________ in the cage for half a day, the bird became hungry.
| A．Being kept | B．Having been kept |
| C．Have been kept | D．Kept |
All flights __________ because of the snowstorm, we decided to take the train.
| A．were canceled | B．had been canceled |
| C．having canceled | D．having been canceled |
The little boy, __________ two attempts to climb over the fence of the garden, decided to have another try.
| A．having made | B．making | C．made | D．has made |
__________ out of work for a few months, mother took up the job of waiting on patients in the hospital.
| A．To be | B．Being | C．Having been | D．Having |
__________ in the restaurant for half an hour, I suddenly realized I had left my wallet at home.
| A．To wait | B．Having waited | C．Having been waited | D．To have waited |