问题描述：
高一2道动词填空
1.Once ＿＿＿(see),it will never be forgotten.
2.During the next five years they studied all the subjects＿＿＿(require)to be a CEO.
1.Once ＿＿＿(see),it will never be forgotten.
2.During the next five years they studied all the subjects＿＿＿(require)to be a CEO.
问题解答：
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