Câu hỏi : When's your sister's birthday?
-> Answer : My sister's birthday is on the fourteenth of July.
-> Dịch : Sinh nhật của (em gái) chị tôi vào ngày 14 tháng 7
Cấu trúc : It's + on + the + [ordinal number] + of + [month].
When is your sister's birthday?
-My sister birthday is on first of July.
When's your sister's birthday?
-My sister's birthday is on the second of June.
When's your sister's birthday?
It's on the ...........of.......... .