student shoudn'tbe given so difficult a problem (as) they can not work out.括号里为什么不用which?指代problem
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studentshoudn''tbegivensodifficultaproblem(as)theycannotworkout.括号里为什么不用which?指代problemstudentshoudn''
student shoudn'tbe given so difficult a problem (as) they can not work out.括号里为什么不用which?指代problem
student shoudn'tbe given so difficult a problem (as) they can not work out.括号里为什么不用which?
指代problem
student shoudn'tbe given so difficult a problem (as) they can not work out.括号里为什么不用which?指代problem
as 这里是因为
原因状语从句 which不能引导原因状语
表原因啊