Task 1. Choose the necessary word. 1.The poem (was written/wrote) by Alex. 2.Kevin's uncle has been building his country house since/for five years. 3.Steve wanted a new car for/since her last birthday. 4.Six people (have been killed/have killed) in a car crash. 5.My brother, who/ which is a doctor, is arriving tonight. 6.A well-known designer (was built/built) the theatre. 7.Carol has bought the book who/ that she was looking for.