It's the first time that he has been to Australia,?
isn't he
hasn't he
isn't it
hasn't it
It’s the first time I __ to see you this year.
---Did your friend go to Japan last week?---____.
He asked me whether I __ this novel before.
When we got to the top of the hill, the sun __
I __Xiao Mao since she was a little girl.