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()4.Peterknew.A.whetherhehasfinishedreadingthebookB.whytheboyhadsomanyquestions

题目详情
( ) 4.Peter knew _______________.
A.whether he has finished reading the book
B.why the boy had so many questions
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答案和解析
选:B
本句为宾语从句,如果主句是一般过去时,从句要用相应的过去时态.
A项时态不正确