Question

_____  have you been like this?

A．How often	B．How many
C．How long	D．How old

Answer 1

C

试题分析：句意:你像这样多长时间了？A. How often多久一次，询问频率；B. How many多少，修饰可数名词； C. How long 多久，询问时间； D. How old多大，询问年龄。有句意可知选C。