In view of all sorts of rumors and guesses, experts carried out some careful and scientific research and___________the possibility of a second earthquake in this area.
---who______it be that is knocking at the door? ---It_______be Father, but I’m not sure.
Though _____ of the danger of hiking in such weather, the young men still wouldn’t give up their plan.
The detective, __________ to be reading a newspaper, glanced at the man seated next to a woman.
We had not waited __________ she came.
My sister _____ Tony for ten years next year.