I admit that there are a lot of retired people nowadays but I am not sure that all of them are dashing about learning hang- gliding or sailing single-handed (5)_________ the world.
I admit that there are a lot of retired people nowadays but I am not sure that all of them are dashing about learning hang- gliding or sailing single-handed (5)_________ the world.
A. round
B. over
C. through
D. into