-Hello,i didn't know you were here.—_________A i'm so gald to see you B not at allC sorry,i don't know D yes,you're right标准答案是A

-Hello,i didn't know you were here.—_________A i'm so gald to see you B not at allC sorry,i don't know D yes,you're right标准答案是A
-Hello,i didn't know you were here.
—_________
A i'm so gald to see you B not at all
C sorry,i don't know D yes,you're right
标准答案是A

-Hello,i didn't know you were here.—_________A i'm so gald to see you B not at allC sorry,i don't know D yes,you're right标准答案是A
是见面的问候,不能直接按意思回答,就是A

B
翻译：你好，我不知道你在这里。
没关系。

B
--你好，（不好意思）先前我并不知道你在这里。
--没关系。

好像是A
翻译应该是:你好，没想到你在这儿呀！
——很高兴见到你

你好，我不知道你在这啊~（潜台词：你也在这啊~你好啊）
回答当然是：我也很高兴在这见到你啊~
所以选A。