-Tom,don’t throw the rubbish on the floor.We should keep the classroom . -Oh,sorry.Miss Wang. A.clean B.quiet C.dirty
We ______ to close the windows before we left the lab.
Xiao Li _________ his hometown for ten years.
The beautiful coat ______ by her last month.
This CD-ROM can help you learn and have fun ______.
---I’m sorry. I _____ your printer for such a long time. ---Never mind.