一Were you at home at 9:00 last night? I called you but nobody answered.—Sorry, I _______ at that time.
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.