-Do you know _____there is a post office around here?-Yes,it's on the Second Street.

问题描述:

-Do you know _____there is a post office around here?-Yes,it's on the Second Street.
A.if B.that C.where D.which
答案选if,可是为什么啊,回答在哪里不是应该由where
还想知道quickly和fast的区别。

如果用where,则应该说成“ where is a post office around here?”there这个主语不能要.既然有了there主语,所以只能用if,表示:那里“是否”有一个邮局?