It's very kind of you to help me 为什么用of

It's very kind of you to help me 为什么用of It’s very kind of you to help me.意思? it's very kind of you to help me.翻译 it's very kind of you to help me与it's very kind for you to h -It's very kind of you to help me.-( ).A.All right B.It's a It is very kind of you to help me的help前为什么要加to It is very kind of you to help me. ( ) 14."It's very kind of you to help me with that heavy box 1.—It’s very kind of you to help me. 改为同义句：It's very kind of you to help me with this physics pro It's very kind of you to help me with my maths. It's very kind of you to help me的答句是什么?