鲁迅说:“天才们无论怎样说大话,归根结底,还是不能凭空创造。描神画鬼,毫无对证,本可以专靠了神思,所谓‘天马行空’似的挥写了,然而他们写出来的,也不过是三只眼,长颈子,就是在常见的人体上,增加了眼睛一只,增长了颈子二三尺而已。”这表明( )
I have _______ to tell you.
Teachers’ job is ______ the students learn well.
Students ought ______ the truth.
I can’t stand _____ for you so long.
There is _____ pollution in the world. We must stop it.