—Who do you think will get the first prize?—Mary, of course. She for the competition for

—Who do you think will get the first prize?
—Mary, of course. She for the competition for months.
A. is preparing
B. was preparing
C. had been preparing
D. has been preparing

A. is preparing B. was preparingC. had been preparing(答案→)D. has been preparing解析：句意：--你认为谁会得到一等奖？--当然是玛丽了。她为这次比赛准备了好几月。根据for months表示玛丽从过去开始就准备比赛，一直持续了好几个月，一直到现在，表示从过去开始的动作一直到持续到现在的动作，应该用现在完成进行时。故选D。

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