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Dr.Zhou is said ________ abroad when he was in his twenties.

[  ]
A.

to have studied

B.

to study

C.

to be studying

D.

to have been studying

答案:A
解析:

to have studied表示动作发生在主句的谓语之前。


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科目:高中英语 来源: 题型:单选题

Dr.Zhou is said ________ abroad when he was in his twenties.


  1. A.
    to have studied
  2. B.
    to study
  3. C.
    to be studying
  4. D.
    to have been studying

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