1. It is reported that 1.4 million people took part in _____ post-graduate entrance exam, _____ 13 percent increase from last year.
A. a; the                 B. the; a                C. a; /            D. /; a
2. I must have been a great _____ to my parents in those hard days, for I never failed to live up to their expectations.
       A. achievement             B. comfort             C. disappointment         D. support