Помогите не могу сделать номер 3! Знатоки английского не проходите мимо!

1.has just struck 2.have been built 3.have you wore? 4.have known 5.have been buying 6.has spent 7.doesn't tell 8.have owned

1.The clock has just struk five 2.They have been building the sport center for a year and half. 3.How long have you worn this jacket ?It looks rather old and dirty. 4.Jim is my close friend. .I have known him all my life 5.For many years Mrs.has been buying the vegetables in one and the same place 6.Anna knows St.Petersburg very well ,she has spent there eight years 7.Sue doesn't tell the truth. What kind of friend is she ?8.They have owned the shop since last year.