题目内容：

I was very interested in _____ she told me.
A.all that B.all which C.all what D.that

优质解答

答案选a
A 项 all 是先行词,that是定语从句的关系代词,在从句中作told 的宾语.
B项 之所以不选B是因为all 是不定代词,其后的定语从句只能用that来引导.
C项 what只能引导宾语从句,而不能引导定语从句,因此c项错误.
D项 只有定语从句的引导词而没有先行词,所以也不正确.