— Look at the photo, Yunnan Province. the Dai people were having!— Wow! They were celebrating the Water Festival.
A: When do you usually have dinner? B: ____6:30____the evening.
I like English, ____ I am not good at it.
There is ____ office on _____first floor.
A: Is the pen on the desk? B: ____.
A: Is there a computer in your class? B: ____.