一道SAT语法, 改句子3. Perhaps (those of us being concerned) should encourage debate about what other levels of government can do to solve the problems of waste disposal. A. those of us being concernedB. those of us who are concernedC. thos

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一道SAT语法, 改句子3. Perhaps (those of us being concerned) should encourage debate about what other levels of government can do to solve the problems of waste disposal. A. those of us being concernedB. those of us who are concernedC. thos
一道SAT语法, 改句子
3. Perhaps (those of us being concerned) should encourage debate about what other levels of government can do to solve the problems of waste disposal.
A. those of us being concerned
B. those of us who are concerned
C. those concerned ones of us
D. we, being among those who are concerned,
E. we who are those being concerned
我选C,答案选B,为什么C不对?解析上说those of us不能分开的,为什么?谢谢!

一道SAT语法, 改句子3. Perhaps (those of us being concerned) should encourage debate about what other levels of government can do to solve the problems of waste disposal. A. those of us being concernedB. those of us who are concernedC. thos
这是固定搭配,those of us意思是我们所有人,如果要列出具体数字可以写成four of us ,意思是我们4个人