英语单项选择一题 Wei Wei is __________.

问题描述:

英语单项选择一题 Wei Wei is __________.
Wei Wei is __________.
A.five-year-old boy B.a five years boy C.five years old

five-year-old,"-"连接多个名词用作形容词的,只能用作前置的定于.不能作表语.be动词后面是表语.
five years old只能做表语.
所以选 C