The pyramid ________how many years ago,do you know?
I don't skate now, but I___________ when I was a kid.
We liked the oil painting better____________ we looked at it.
If human beings had been a bit less greedy and cruel, more birds and animals _____dying out.
We must keep our room clean. Dirt and disease go _____, you know.
--Could I use your bike, Jack? --Of course, you____________.