I gave that boy so difficult a math problem ____ he couldn’t work out A.that B.which C.I gave that boy so difficult a math problem ____ he couldn’t work out A.that \x05\x05B.which \x05\x05C.as \x05D.when那个正确,为什么

I gave that boy so difficult a math problem ____ he couldn’t work out A.that B.which C.I gave that boy so difficult a math problem ____ he couldn’t work out A.that \x05\x05B.which \x05\x05C.as \x05D.when那个正确,为什么
I gave that boy so difficult a math problem ____ he couldn’t work out A.that B.which C.
I gave that boy so difficult a math problem ____ he couldn’t work out
A.that \x05\x05B.which \x05\x05C.as \x05D.when
那个正确,为什么

I gave that boy so difficult a math problem ____ he couldn’t work out A.that B.which C.I gave that boy so difficult a math problem ____ he couldn’t work out A.that \x05\x05B.which \x05\x05C.as \x05D.when那个正确,为什么
选b ,work out 后面没有宾语,which 引导的是定语从句

A. that
SO...THAT... 是搭配

选择A that
so that　如此。。。以至于。。。。
希望采纳。

A that
so...that：如此...以至于