21. After his father died suddenly without finishing his research in a certain field, Xiao Jun determined to follow his           to complete it.  

 A. trial             B. track               C. remarks                    D. trap

22. The fear of failing exams can cause you to panic and stress can be a(n) _______ to your performance at school.

 A. solution     B. invitation         C. block                     D. access

23. If you waste too much time seeking recognition or approval from others, then you won’t have time to ______ all that you desire.

 A. accumulate         B. absorb          C. appreciate              D. accomplish

24. The police analyzed the case cautiously and searched for any clue concerning it. Eventually, they__________ the precious stolen paintings.

 A. requested            B. recovered               C. rescued                 D. ruined

25. That night, his car was out of order halfway; therefore he had no choice but to_______at a nearby hotel.

 A. put up                B. put aside            C. put off            D. put out

26. In the accident, his sister was badly injured, but under good treatment, she is beginning to ______ and will soon recover.

 A. pick up               B. call up          C. grow up                 D. show up

27. Some of these schools are private and offer a________ schedule for students who can choose to work at school or even at home at weekends.

 A. reliable             B. flexible          C. general             D. temporary