It's_
It's_
please s_ it
It's_ past ten.
It s_ in New York
This is_hat.It's_ 帮下忙!
when it snows,we often make s_
It"s_ _pleasure to meet you here.
It's_(polite)to shout at others.
It was s_ when I woke up.
It is s_ of you to answer the difficult question.
I have a birthday cake .Let's s_ it together.
It is not polite to s_ at others.