Question

----_______is your sister? ---She is thirteen years old. A．How many...

----_______is your sister? ---She is thirteen years old. A．How many B．How old C．How much D．How long

Answer 1

B

试题分析：句意：你姐姐多大了？她13岁。询问某人的年龄用How old be sb？句型，how many表示“数量的多少”，how much修饰不可数名词，how long描述长度；故选B。