3 ( )It is two days since I____the book.A.has had B.has bought C.bought D.buy

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3()ItistwodayssinceI____thebook.A.hashadB.hasboughtC.boughtD.buy3()ItistwodayssinceI____thebook.A.ha

3 ( )It is two days since I____the book.A.has had B.has bought C.bought D.buy
3 ( )It is two days since I____the book.A.has had B.has bought C.bought D.buy

3 ( )It is two days since I____the book.A.has had B.has bought C.bought D.buy
C
since 什么事件、什么动作发生(肯定是过去发生的),因此跟过去时哦,选bought
前面可以是完成时,这里强调的是到现在是几天(现在时也可以),也就是说 It is two days = It has been two days since I bought the book

C
应该是bought
it is +一段时间+since 后面典型用一个时间点
只有bought 在这里才能表示过去的一个时间点

C
那本书我已经买了有两天了。
since从句要用过去式
请及时采纳,不懂继续问( 天天在线 )
(*^__^*) 祝学习进步! 谢谢!