the invention__A_took her two years will do good to the world.a.which b./ c.on which d.itb为啥不对?
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theinvention__A_tookhertwoyearswilldogoodtotheworld.a.whichb./c.onwhichd.itb为啥不对?theinvention__A_too
the invention__A_took her two years will do good to the world.a.which b./ c.on which d.itb为啥不对?
the invention__A_took her two years will do good to the world.a.which b./ c.on which d.it
b为啥不对?
the invention__A_took her two years will do good to the world.a.which b./ c.on which d.itb为啥不对?
这是一个定语从句,且关系词在从句中做主语,因而不能省略
因为这个句子有两个谓语 一定是从句啊 B的话这句话就不对了 有两个谓语一定要有连词或者从句的那个连词的 所以A正确
A 由于空后是一个动词，故该引导词在从句中作主语，故不能省略。定语从句的引导词只有在从句中作宾语才可以省略。故选which，不选b。
a
b,定语从句缺少主语，所以不对。