It’s the third time I to the Great Wall．A.have beenB.had beenC.amD.were
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It’s the third time I ________ to the Great Wall．
A.have been
B.had been
C.am
D.were
试题答案
A
It’s the third time I ________ to the Great Wall．
A.have been
B.had been
C.am
D.were
A