为带横线的词语选择正确的解释。
妈妈教育我们不要占别人的便宜。( )
A:价钱低
B:使……得到便宜
C:不应得到的利益。
—A movie called X Men 2 is on show these days. Would you like to see it with me?
—Sorry. I ______ it already. But it is really exciting.
甲、乙、丙三人共做了183道数学题,乙做的题比丙的2倍少4道,甲做的题比丙的3倍多7道.丙做了多少道题?正确算式是( )
—________.They are pens.