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
A
to have studied表示動(dòng)作發(fā)生在主句的謂語之前。
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科目：高中英語 來源：必修一導(dǎo)學(xué)英語譯林 譯林版 題型：016

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

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