you tell me whether he ___________it over before he cut down the trees
1）---Could you tell me whether he ___________it over before he cut down the trees
--- I am not sure .
A.will think B.would think C.had thought D.thought
这题答案是选C,想问一下英语语法高手：为什么选C,哪里体现了是过去完成时?