it is c__ to all of us that two and two make fou

问题描述:

it is c__ to all of us that two and two make fou
it is c__ to all of us that two and two make four.填单词

common普通的我觉得意思不通吧,而且我们还没教到这个单词你们学到哪课,什么书已经知道了,是clearclear清楚的