选什么,注明原因 There are twenty boys in our school.( )are from America.
问题描述：
选什么,注明原因 There are twenty boys in our school.( )are from America.
tThere are twenty boys in our school.( )are from America.
A.two they B.the second c.two of them D.the two of them
答
选C.A不对.人称代词主格要放在数词的前面,B不对,the second 是单数,与后面的are在数上不一致,D 不对,首次提到的这两个人不知具体到那两个.所以选C.