—I am sure Mary will win the first prize in the final.
—I think so. She______ for it for months.
A.is preparing | B.was preparing | C.had been preparing | D.has been preparing |
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—I am sure Mary will win the first prize in the final.
—I think so. She______ for it for months.
A.is preparing | B.was preparing | C.had been preparing | D.has been preparing |