6. The thief who was put in____ prison, had ____ feeling of guilt（内疚）. So he made ____ great progress.
A. the; a; / B / ; the ; a C the; / ; a D. /; a; /
15. -It seems that Fred has a big plan.
-Yes, He wants to devote all of his time ____ films .
A. to write B. writing C. to writing D. for writing
