He made up his mind to devote his life _______ pollution _______ happily.
A. to prevent; to live B. to prevent; from living
C. to preventing; to live D. to preventing; living
After five hours’ drive, they reached _______ they thought was the place they had been dreaming of.
A. that B. where 
C. which D. what
The news that he failed in the exam _______ his unhappiness this morning.
A. accounted for B. accounting for C. had accounted for D. to account for
The great _______ of my plan is that it’s so cheap compared to the others.
A. power B. strength C. energy D. force
The rescuers _______ to work as soon as they arrived at the spot of the accident.
A. set out B. set off C. set up D. set in
I’ll never forget the good trick my classmates ________ on me when I was in the primary school.
A. paid B. acted C. played D. made
