21. —Do you like cooking, Mary?
—______. Luckily I’ve never had to worry much about it.
A. Not bad B. Not really C. Probably not D. Suppose not
22. Viewers will have ______ second chance to see Saturday’s concert on ______ Channel 4 tonight.
A. a; the B. the; the C. the; 不填 D. a; 不填
23. —I phoned you at 7 yesterday evening but nobody answered.
—Oh, I ______ my dog in the park then.
A. walked B. was walking C. had walked D. would walk
