I'll show you the store ()you may buy all ()you need.A.that,that B.which,that C.where,which D.in which,/

I'll show you the store ()you may buy all ()you need.A.that,that B.which,that C.where,which D.in which,/
I'll show you the store ()you may buy all ()you need.
A.that,that B.which,that C.where,which D.in which,/

I'll show you the store ()you may buy all ()you need.A.that,that B.which,that C.where,which D.in which,/
D
两个都是定语从句
第一个是in which,因为buy 是双宾动词,缺一个宾语,用which,同时,in the store 要用介词in,因此是in which
第二个,可以填that,或者不填
因为,need 是及物动词,缺宾语,先行词是all,只能填that,不能填which,也可以索性不填,省略掉

选B项
第一空可填in which 或者where