27. She is the last person _______ the aircraft.
A. to leave B. leaving C. leaves D. leaved
28. He was the second man ______ in this way.
A. killing B. to be killed C. kills D. is killed
29. The student ______ to class early has to clean the board.
A. to come B. coming C. came D. comes
30. There are many people _____ are living in very poor conditions.
A. who B. whom C. what D. where