The mother asked her children to keep their mouths ________ and their eyes ________．
A.shut; openB.shutting; peningC.shut; openedD.shutting; opened在线课程A
解析：
此题考查keep作及物动词的用法。“keep+宾语+宾语补足语”意为“使人或物保持在某一状态”。第一空过去分词shut作补语，第二空形容词open作补语。