21. ____New Year's Eve is celebrated as a family affair, _____ time of reunion and thanksgiving.
A. the; 不填 B. 不填; the C. 不填; 不填 D. 不填; a
22. The reporters hurried to the airport, only ______ that the film stars had just left by air.
A. telling B. being told C. to be told D. to tell
23. Instant messengers have their own shorthand language. Grammar isn't important. In English, instant messengers can ________articles（冠词）, pronouns（代词）, etc.
A. cut out B. leave out C. pick out D. break out
