1. Having walked in the forest for hours without anyone in ____ sight, the captain was extremely excited at _____ sight of a small village far ahead.
A. /, the B. the, / C. /, a D. his, the
2. I really wonder why so many people have fun _______ tricks ____ his friends.
A. in playing, in B. playing, on C. with playing, on D. to play, of
3. A lot of ________ has been done to the environment because of white pollution.
A. harm B. custom C. fun D. sadness
