71.1 Improve - improvement Invent - invention Relax – relaxation Hesitate - hesitation Arrange - arrangement Stupid - stupidity Happy – happiness Similar - similarity Popular – popularity Sad – sadness Active – activity 71.2 Opera singers Films actors Company directors Translator Football player Ballet dancer Picture painter Scientists 71.3 In his speech last night, the prime minister said that the present weakness economy was caused by the bad management of the last economists and their inability to give the right kind of help for industry. He said he was now involved in detailed discussion with ministers, bankers and government about a range of different financial measures, and he hoped the people would be able to see a big improvement in the economy by the end of the year. 35.1 c d f c a b 35.2 Dentist Sailor Mechanic Vets Pilot Accountant Carpenter, builder, plumber Surgeon, soldier, architect Police officer, fireman, nurse. 35.3 Teaches university students Treats animals Designs buildings Installs and repairs electrical things Represents people with legal problems Operates on people Repairs cars Looks after someone's teeth Plans the building of roads etc. 35.4 Really? When did she join the police force? Really? When did she join the navy? Really? When did he join the air force? Really? When did she join the army? Really? When did he join the fire brigade?