题目内容
—Why do you look so worried?
—Fred left the company half an hour ago. His work _______ unfinished since.
—Fred left the company half an hour ago. His work _______ unfinished since.
| A.left | B.was left | C.has left | D.has been left |
D
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。
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