We’ll have a class meeting. Don’t leave the classroom ______ 6 o’clock. [ ]

How do you read 15,847?

What was wrong with you yesterday evening?—- I ____ my homework when the light went off suddenly.

I have decided to _________my bad habit of sleeping in class.—That’s good news. I hope you can do it this time.

___________, education is about learning and the more you learn, the more equipped for life you are.