Can I get you a drink?That's very nice of you.I've already got _____.

问题描述:

Can I get you a drink?That's very nice of you.I've already got _____.
A.it B.one C.that D.this

B
你要饮料吗?
我已经有了.那其他选项为什么不行呢??a drink 对应one.其他的都不符合。