题目内容：

when we are doing the exercise,we must keep our eyes_______ a,close b,closing c,closed d,to close
我知道正确答案选c,但是不知道为什么选c?

优质解答

表示闭着,关着这种状态,要用形容词closed而如果指开着的这种状态,则用形容词open,而不是opened如：We are watching TV in the room with the door open and the windows closed.我们开着门,关着窗在房间里看电视请在...