英语高中语法题To save money for my education ,mother often takes one more work than ____good for her .A.to be B.that is C .which D .is 选出答案给出理由

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英语高中语法题To save money for my education ,mother often takes one more work than ____good for her .A.to be B.that is C .which D .is 选出答案给出理由

英语高中语法题To save money for my education ,mother often takes one more work than ____good for her .A.to be B.that is C .which D .is 选出答案给出理由
英语高中语法题
To save money for my education ,mother often takes one more work than ____good for her .A.to be B.that is C .which D .is 选出答案给出理由

英语高中语法题To save money for my education ,mother often takes one more work than ____good for her .A.to be B.that is C .which D .is 选出答案给出理由
这么简单的题都用争论吗?
答案是D
因为than是连词,连词的作用就是连接两个句子,主语是mother,前面一个是主谓句型,后面一个是主系表句型,当然得加is,其它的选项都无法构成主系表.