—________your brother speak French?
—Yes, he has learnt it in Paris for three years.
A：Should
B：Must
C：Can
D：May
①CH4 ②C3H8 ③C5H12 ④C8H18 ⑤C12H26．
有四张卡片（背面完全相同）分别写有运算符号+，﹣，×，÷，把它们背面朝上洗匀后，从中随机抽出1张卡片，放在“2□1”的方框里组成一个算式，再计算出结果，则计算结果是2的可能性是 ____
–The banana is too big. Do I need ____?
