There are so many interesting toys that I can't decide ___.A,to buy which.B.There are so many interesting toys that I can't decide ___.A,to buy which.B.which to buy C.to buy what D.what to buy.选B,为什么不能选D

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There are so many interesting toys that I can't decide ___.A,to buy which.B.There are so many interesting toys that I can't decide ___.A,to buy which.B.which to buy C.to buy what D.what to buy.选B,为什么不能选D

There are so many interesting toys that I can't decide ___.A,to buy which.B.There are so many interesting toys that I can't decide ___.A,to buy which.B.which to buy C.to buy what D.what to buy.选B,为什么不能选D
There are so many interesting toys that I can't decide ___.A,to buy which.B.
There are so many interesting toys that I can't decide ___.
A,to buy which.B.which to buy C.to buy what D.what to buy.
选B,为什么不能选D

There are so many interesting toys that I can't decide ___.A,to buy which.B.There are so many interesting toys that I can't decide ___.A,to buy which.B.which to buy C.to buy what D.what to buy.选B,为什么不能选D
B.which to buy 是对的.
题目隐含着选择的范围,故要用which,不能用what.

因为有前边的语境There are so many interesting toys
所以用which to buy,去买哪个而不是去买什么。