Professor Smith______in this famous university for tbree decades by next winter.

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问题 Professor Smith______in this famous university for tbree decades by next winter.

选项 A、will work
B、has worked
C、has been working
D、will have workcd

答案D

解析到今年冬天，Smith教授就在这所著名的大学工作三十年了。by后面是一个将来的时间，谓语动词应该用将来完成时。

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大学英语四级

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