---Do you know why people set off fireworks ? --- Well, in ancient China, people set off fireworks on New Year’s EVE that the loud noise could drive away bad spirits .
---_________________ ? ---It’s dark blue.
---________. What’s the time now, please? ---Let me see. Oh, it’s nine.
--- ________ do you go to see your grandparents? --- Once a week.
--- Are these your bikes? ---No, _______ aren’t.
May I take a seat here? ---_________.