The Professor considers ____ no good _____ without understanding.
| A．it; to read | B．it; reading |
| C．that; to read | D．that; reading |
In the past, ice used to ______ used to ______ the air in a room.
| A．be ;cooling | B．be; cool | C．being; cool | D．being; cooling |
The old man’s _______ pity on the snake led to his own death.
| A．take | B．taking | C．being taken | D．have |
________ many times, but he still could not understand it.
| A．Having been told | B．Tough he had been told |
| C．He was told | D．Having told |
Faced with a bill for $ 10,000,_________.
| A．John had to take an extra job | B．the boss has given John an extra job |
| C．an extra job has been taken | D．an extra job has been given to John |
-----My room gets very cold at night.
-----_________________.
| A．So is mine | B．So mine is | C．So does mine | D．So mine does |