根据问句写答句.
问题描述：
根据问句写答句.
1.————————————————————————?
National Day is on October lst.
2.__________________________________________?
They are cows.
3.__________________________________________?
This is Mary's invitation.
4.__________________________________________?
It's in the bin.
5.__________________________________________?
They are in the City Park.
答
What date is National Day?
What are they?
What's this?
Where is that?
Where are they?