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1 . ________ many times, the naught boy still made the same mistake.
A.Have been told | B.Being told | C.Having been told | D.Told |
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2 . The problem ________ now is very important.
A.discussed | B.being discussed | C.discussing | D.to be discussed |
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3 . ________ why he went there, he said he was sent to be trained for a space flight.
A.Being asked | B.Asked | C.Having asked | D.Asking |
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