__________ in her office for nearly 20 hours, she is going home to have a rest.
| A．To work |
| B．Working |
| C．To have worked |
| D．Having worked |
You should take advantage __________ this opportunity and try to make a good impression __________ them.
| A．of; of | B．over; on | C．over; of | D．of; on |
There was a (an) __________ silence between us after we were left alone in the sitting-room.
| A．awkward | B．angry | C．adequate | D．patient |
You will succeed in the end __________ you give up halfway.
| A．even if | B．as though | C．as long as | D．unless |
__________ to his scientific work, he has no time to care for his family affairs, which his wife always complains about.
| A．Devoting | B．Devoted | C．Being devoted | D．Having devoted |
__________ the bananas to go bad, he preferred to sell them at half price.
| A．Rather than allowing | B．Rather than to allow |
| C．More than allow | D．Rather than allow |