—It’s really nice of you.

问题描述:

—It’s really nice of you.
—_____, we are very glad to help.
A.It’s nothingB. It’s all rightC. You are welcome
为什么是A?
但为什么 不选B呢?

——你真好.
——没什么,我们很高兴能帮助你.
最通啊……