It's nice to
it's nice of sb to do
It's nice ---(talk) to you
It's nice to meet you
it's so nice to hear your
It's nice to be back
It's nice of you to help
It's very nice ___you to write____me
It's nice to meet you finally
It's nice of you to say
It's nice to meet you again
It’s nice to meet you中的nice是什么意思