don't you know that,my dear friend,it is you that she lovesdon't you know ____,my dear friend,it is you that she lovesA.who B.which C.that D what选C.为什么?

don't you know that,my dear friend,it is you that she lovesdon't you know ____,my dear friend,it is you that she lovesA.who B.which C.that D what选C.为什么?
don't you know that,my dear friend,it is you that she loves
don't you know ____,my dear friend,it is you that she loves
A.who B.which C.that D what
选C.为什么?

don't you know that,my dear friend,it is you that she lovesdon't you know ____,my dear friend,it is you that she lovesA.who B.which C.that D what选C.为什么?
去掉插入语 my dear friend 分析
don't you know【】it is you that she loves
that 引导宾语从句,且不在从句中充当成分,而其他三个在从句中都要做成分,it is you that she loves是强调句,去掉强调结构 she loves you 从句中成分完整,所以选择that

that指代后面“it is you that she loves”这个事实。翻译：你难道不知道吗，我的好朋友，你才是她爱的人。

my dear friend 是插入语，不影响句义，that在句中起强调作用，强调姑娘爱的是你，不是别人啊！！！其它三个词无此功能。

翻译：我亲爱的朋友啊，难道你不知道她爱的是你么？？？？！！！！！

that引导宾语从句作know的宾语，第二个that是it is 。。。that。。。是强调结构中的固定用法，口语中强调人时可以用who（m）代替。my dear friend,我的朋友（插入语），分析结构时可先略去。
我的朋友，你难道不知道你才是她的爱/所爱的人？

which 和what 指代物
who指代人
此题需要一个代词代替下文的事情，所以，应该选that
翻译:我亲爱的朋友，难道你不知道她爱的人是你吗？