A warning signal suddenly appeared on the screen of my computer, ______ the computer was being attacked by a certain virus.
This is his only request that the room ______ after being used.
It's the third time ________ late for school this week.
With the price _______ so quickly, I find 1,000 yuan a month can hardly cover the cost of living.
Receiving the report that the plane crashed, the government took measures ______. .
We’ll have to work extra hours, for there are still some problems ____________ .