( )21. — Hurry up! It’s already 7:15 now.
— Oh, take your time. The train ___________ at 8:00.
A . will leave B. is leaving
C. leaves D. will have left
( )22. Everybody present at the meeting _____ there crossing their legs.
A. sits B. sitting C. seated D. seating
( )23. He regrets ______ those mean words to his partner.
A. to say B. to be saying
C. having said D. to be saying