who has an umbrella here ,please?I have(one ;it;this;that) ,Miss Lee这道题目中为什么是one

问题描述:

who has an umbrella here ,please?I have(one ;it;this;that) ,Miss Lee这道题目中为什么是one

因为问句中没有特指哪一把伞,如果是the unbrella的话,就不能选one了.
整句的意思是:谁又把伞?我有.
而不是我有这把/我有那把.