Questions 19 to 22 are based on the conversation you have just heard.
19. A) A class presentation they\'re preparing.
B) A television program the man is watching.
C) Visiting a close fiend of theirs.
D) Studying for a test.
20. A) He\'s taking a break from studying.
B) He has already finished studying.
C) He was assigned to watch a program by his professor.
D) He\'s finding out some information for a friend.
21. A) He didn\'t know that she was enrolled in a mathematic course.
B) He thought she preferred to study alone.
C) He thought she had made arrangements to study with
D) He had told her that he had done poorly on a recent test.
22. A) He and Elizabeth argued recently.
B) He heard Elizabeth did poorly on the last test.
C) He doesn\'t want to bother Elizabeth so late in the evening.
D) He\'d rather study in his own dormitory.
Questions 23 to 25 are based on the conversation you have just heard.
23. A) They look darker.
B) They look smaller.
C) They look clearer.
D) They look cloudier.
24. A) It stops working.
B) It becomes sharper.
C) It confuses odors.
D) It defects fewer odors.
25. A) They both have leg injuries.
B) They\'re too tired to walk any farther.
C) They have no umbrella with them.
D) They\'ve seen no signs to give them directions.