问:Can I get you a drink?答:that's really of you.I've already gotten( )为什么填one不填it或that?

问题描述:

问:Can I get you a drink?答:that's really of you.I've already gotten( )为什么填one不填it或that?
有这样一道题:问:Can I get you a drink?答:that's really of you .I've already gotten ( )为什么填one不填it或that?
这样看清楚些

问的是 get you a drink?这个a drink,并不是具体的什么东西 所以 不能用it或者that 因为前文没特指 a drink 是指什么.