A: Would you mind my smoking here? B: Look at that sign. It says, “No smoking.”
Everything around us is ____ solid ..liquid ____ gas.
It is late; ____, I'm too tired to go out.
Mr Wang went to Nanjing ____ October,1998 and came back home ____ the morning of Nov.5.
We have produced 15% more cotton this year____ we did last year.
The teacher is busy ____ correcting papers.