What ______ you ______ when the telephone rang just now?
I don’t know if Mr Green ________. If he ______, I will let you know.
—You seem to like sweets. —_______. That’s probably why I’m becoming fatter and fatter.
Do you know where ______ from?
It’s difficult _____ your sound because the noise is too high.
We don’t know If it _____. If it_____, we won’t go out for a walk.