11. Ann had fed the cats before she went to the cinema >>> The cats 12.The students have discussed the pollution problems since last week. =>The pollution problems. 13.The thieves have stolen the most valuable painting in the national museum =>The most valuable painting 14.They speak three languages in Canada. >>Three languages 15.My father is repairing those shoes. →Those shoes... 16.He has broken his nose in a football match. His nose 口 WAATON A 3:37 CH 16-05/202