21. ---- How was the television debate last night?
---- Super! Rarely______ so much media attention.
A. a debate attracted B. did a debate attract
C. a debate did attract D. attracted a debate
22. What an unforgettable experience! I’ll write it down _______ it is still fresh in my memory.
A. since B. after C. while D. until
23. Your uncle seems to be a good driver；______, I wouldn’t dare to travel in his car.
A. even so B. even though C. therefore D. so
24. I ______ on a sofa because my grandparents have come for the weekend.
A. slept B. was sleeping C. have slept D. am sleeping
