21. —Oh, please stay a bit longer; it’s been such_______ fun having you.
—Thanks anyway. I have to make ________early start tomorrow.
A. /; the B. a; an C. /; an D. the; an
22. Bob was in hospital for over six months; he felt as if he was _______from the outside world.
A. cut out B. cut off
C. cut up D. cut through
