Question

中译英：他就那个问题思考了近半个小时，终于想出了一个新的解决方法。（come up with)

Answer 1

He thought on the question of nearly half an hour, and finally come up with a new solution.

Answer 2

He thought about that problem for nearly half an hour and finally he came up with a new solution.

Answer 3

He thought about that question for nearly half an hour,and found out a new solution at last.