高一英语（定语从句）Thechildrenwereallinterestedintheyhadbeenintheexhibition.A.whichB.thatallC.allwhatD.allthat--------------------------------------------------不是说,介词后面用which,但是答案的B.C.D中都

Question

高一英语（定语从句）
The children were all interested in __ they had been in the exhibition.
A.which B.that all C.all what D.all that
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不是说,介词后面用which,但是答案的B.C.D中都有个all,而all有和that一起用,但这道题是不是就有A.
还是说,介词如果和后面的先行词有联系,先行词就用which/whom,如果介词和后面的先行词没有关系,先行词用什么都不要紧?

Answer 1

选D.这里的in是和前面的be interested in搭配的.而in wihch/whom中的in是和定语从句中的动词联系的,不是一回事.