I can't say ____ I want to see you again.It's been a year since I last saw you .

问题描述:

I can't say ____ I want to see you again.It's been a year since I last saw you .
选择:A How often B How soon C How long
为什么?把上面的c选项改为how much

I can't say C____ I want to see you again.It's been a year since I last saw you .