Mr Jones, a professor, for his excellent lectures, is popular with his students.A. known

发布时间：2020-08-16 07:23:15

Mr Jones, a professor,      for his excellent lectures, is popular with his students.
A. known
B. knowing
C. to be known
D. having known

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(答案→)A. known
B. knowing
C. to be known
D. having known
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