1)The German didn't build the factory during the Second World War. → 2)The Greens are going to paint this house and these cars for Chirstmas Day. → 3)Ann had fed the cats before she went to the cinema. → 4)The students have discussed the pullution problems since last week. → 5)Have the thieves the most valueble in the national museum? → Giúp mik đổi về passive voice nha