Turn the following sentences into passive voice.

a) Somebody built this house in 1930.
b) Siemens employs 2000 people in Cyprus.
c) People play football all over the world.
d) A Japanese firm makes these television sets.
e) Our company sells more than a thousand cars every month.
f) They didn't offer us anything to drink.
g) They don't teach Chinese in our school.
h) My mother doesn't usually wash the dishes in the afternoon.