1) He sold his old computer __ £.50.
2) Why did she return __ London?
3) How much did you pay __ that camera?
4) They're going __ a trip around the world.
5) What do you want to talk __ today?
6) Can you help me look __ my car keys?
7) Why were you looking __ of the window?

Варианты:
a) to
b) for
c) about
d) for
e) for
f) on
g) out