--- Why do you often take exercise? --- _____ me keep fit.
________ he is a child, ______ he knows much about the computer.
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.