A) Thomas Edison was invented the lightbulb
B) The lightbulb was invented by Thomas Edison
C) The lightbulb invented Thomas Edison

A) Gold objects were discovered in my yard
B) Gold objects discovered in my yard
C) My yard discovered gold objects

A) The treasure was hid in the ocean
B) The treasure wasn't hidden in the ocean
C) The treasure hidden in the ocean

A) When the statues was built?
B) When were these statues built
C) When was these statues built?

A) two mummies buried in this tomb
B) Two mummies were buried in this tomb
C) This tomb buried two mummies