He works in a factory now, but he on a farm for 20 years.
| A．worked | B．has worked | C．had worked | D．had been working |
The need for an operation, especially an immediate operation, almost always comes as a __________ to the patient and his family.
| A．result | B．happiness |
| C．disappointment | D．shock |
—You __________ part in the party on time.
—Sorry, I was delayed by the accident.
| A．are supposed to take | B．have supposed to take |
| C．are supposed to have taken | D．supposed to take |
__________ puzzles me most is that I don't know __________ the difference between the two lies.
| A．What; how | B．What; where |
| C．That; what | D．How; which |
The soup is perfect, and the steak is delicious. I’d like to have such a meal again ________ it costs twice as much.
| A．if only | B．even if |
| C．as if | D．now that |
—Things are getting more expensive now.
—It’s ________ that prices will continue to ________.
| A．sure；go up | B．certain；raise up |
| C．sure；raise up | D．certain；go up |