She is a well--known doctor now , but she _____ as a cleaner at the hospital for five years .
| A．has worked | B．worked | C．had worked | D．works |
All the task ahead of time, they decided to go on holiday for a week.
| A．had been finished | B．were finished |
| C．having been finished | D．been finished |
The doctor had almost lost hope at one point, but the patient finally.
| A．pulled out | B．pulled through | C．pulled up | D．pulled over |
The new secretary is and therefore the manager is satisfied with her work.
| A．effective | B．efficient | C．specific | D．sufficient |
— Hi! John, would you like to play football with us?
— Oh，I can’t. I ___ my lesson all the morning and still need half an hour.
| A．am reviewing | B．have been reviewing |
| C．have reviewed | D．reviewed |
---- Which of these digital cameras do you like best?
---- ______. They are both expensive and of little use.
| A．None | B．Neither | C．Nothing | D．No one |