Gary ________ for IBM until 1969, when he ________ a job at Sperry. A.worked B.had got C.has worked D.got E.was working F.has got G.had been working H. got
Considering that Tom always did well in all his subjects, he ________ in the final exam. A.mustn’t fail B.couldn’t have failed C.ought not to fail D.mustn’t have failed
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