21. When _________a career, you should consider all the aspects of a job.

A. choose              B. choosing                C. chose                     D. chosen

22. The interviewer will begin to judge you as soon as he or she ________ you in the waiting room.

A. sees                  B. will see                 C. is seeing                D. saw

23. My father worked day and night. Otherwise, there ________ no one to support the family.

A. would be          B. must be                C. would have been      D. must have been