问题描述：
单选题I won't tell Jacket the answer to the puzzle until he——it over for more than an hou
I won't tell Jacket the answer to the puzzle until he——it over for more than an hour.
A.has been thinking B.had thought C.will think D.will have thought
想不通.麻烦给我解释一下各个选项,
I won't tell Jacket the answer to the puzzle until he——it over for more than an hour.
A.has been thinking B.had thought C.will think D.will have thought
想不通.麻烦给我解释一下各个选项,
问题解答：
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