He ____ his studies and went on the stage, and later he became a famous actor.
He ____ his studies and went on the stage, and later he became a famous actor.
He ____ his studies and went on the stage, and later he became a famous actor.
gave up
一棵完全二叉树具有600个结点，则它有 个度为1的结点
答：1
He ____ his studies and went on the stage, and later he became a famous actor.
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