We had an anxious couple of weeks _____ for the results of the experiment.
| A. wait | B. to be waiting | C. waited | D. waiting |
–What is it that made Obama happy?
--_____ the US President.
| A. To elect | B. Electing | C. Being elected | D. Having elected |
_____ from being killed, the deer looked for a place where he could get food.
| A. To escape | B. Escaping | C. Having escaped | D. To have escaped |