A:What (date) is it today?
B:It's the 20th of March.
A:What (day) was it yesterday?
B:It was Tuesday.
A:(When's) Mid-Autume Festival?
B:It's in september or october.
A:(Where) are my glasses?
B:They're behind the computer.
A:(Who) are the presents from?
B:They are from my friends.
A:(Where) did you spend your holidays last summer?
B:I went to Hainan.
A:(Whose) tea and teapot are they?
B:They are grandpa's.