问题标题：
改同义句:ittookhertwohourstodothework.She()twohours()thework.
问题描述：
改同义句:ittookhertwohourstodothework.She()twohours()thework.
成兵回答：
ittookhertwohourstodothework.
She(spent)twohours(doing)thework.
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