单选题
Mary's bedroom is clean and clear, while her brother's bedroom is always ______.
A、
at six and seven
B、
at sixes and sevens
C、
at sixth and seventh
D、
at sixths and sevenths
【正确答案】
B
【答案解析】
本题考查固定短语，at sixes and sevens表示“乱七八糟”。
提交答案
关闭