--- How come your father can read books in German?
--- Well, he____on a project with some German engineers for 3 years when he was young.
| A．worked | B．was working | C．had worked | D．would work |
相关试题
The thief was caught by the police and put him into __ prison soon.
| A．a | B．an | C．the | D．/ |
in the qucue for half an hour ,the old man auddenly realized he had left the cheque in the car.
| A． | Waiting | B． | To wait | C． | Having waited | D． | To have waited |
-------Do you have enough to ________all your daily expenses?
--------Oh yes, enough and to spare.
| A．cover | B．spend | C．fill | D．offer |
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