It is the idea____smiles can get rid of cold ____has been proved by the researchers many times.
He didn’t seem to mind_____________ TV while he was trying to study
I don't skate now, but I___________ when I was a kid.
We liked the oil painting better____________ we looked at it.
We must keep our room clean. Dirt and disease go ____________, you know.
--Could I use your bike, Jack? --Of course, you____________.