21. They got married in 2001 and three years later they ________ their child.
A. have B. had C. had had D. will have
22. What ________beautiful day it is! Why not go out for _______picnic?
A. a; / B. the; a C. /; a D. a; a
23. The chairman thought ________ necessary to invite Professor Smith to speak at the meeting.
A. this B. what C. it D. that
24. When he woke up, he found ________lying by the sea.
A. he B. his C. him D. himself
