1) She doesn't care money; she's more concerned about her health.
CORRECT! CARE ABOUT STH
2) Have you finished that report yet? I'm working it.
CORRECT! WORK ON STH
3) Twenty one vehicles were involved the pile-up.
CORRECT! BE INVOLVED IN STH
4) The boss explained the problem his employees.
CORRECT! EXPLAIN STH TO SB
5) Students have heard that relying grammar and spell checkers is a bad idea.
CORRECT! RELY ON | UPON SB/STH
6) They finally succeeded completing the project plan for the trade show.
CORRECT! SUCCEED IN (DOING) STH
7) The explosion turned the building a blazing inferno.
CORRECT! TURN STH INTO STH
8) Stephen moved back home to care his elderly parents.
CORRECT! CARE FOR SB
9) Please enclose a curriculum vitae your application.
CORRECT! ENCLOSE STH WITH STH
10) The professor presented some of the results the public.
CORRECT! PRESENT STH TO SB