3. WWF, the World Wildlife Fund, was set ______ on September 11, 1961 in Switzerland.
A. away B. at C. up D. in
10. The gun accidentally went ______ and killed the guy.
A. out B. off C up D. away
11. I am too tired. I can’t go _____ walking.
A. out B. off C up D. on
21. It was raining so hard, but the football match ______ anyway.
A. went out B. went on C. went up D. went away
24. The passengers had to wait because the plane ___off one hour late.
A. took B. turned C. cut D. made