who will be sent abroad__not known yet a.is b.are c.was 意思
问题描述：
who will be sent abroad__not known yet a.is b.are c.was 意思
who will be sent abroad__not known yet a.is b.are c.was 意思是为什么要选择这个
答
is
主语是个从句who will be sent abroad,所以谓语动词用单数,是现在的事,所以不用was