—Why do you look so worried? —Fred left the company half an hour ago. His work
题型：不详难度：来源：
—Why do you look so worried?
—Fred left the company half an hour ago. His work _______ unfinished since.| A．left | B．was left | C．has left | D．has been left |
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答案
| D |
解析
| 考查时态和语态。因句中有since所以要用完成时，又因空前主语是事情，所以要用被动。 |
举一反三
—Why were you not at the concert?
—I________ a close game between two European football teams.| A．watched | B．had watched | | C．was watching | D．have been watching |
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．I want to buy that kind of cloth because I _____ the cloth _____ well.| A．have been told; washes | B．have told; washes | | C．was told; washed | D．have been told; is washed |
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