Unit 91.3 и unit 91.4​

1.it has been snowing since last night. 2.wille has been smoking since he was a teenager. 3.sandra has been looking for a job for a month. 4.joe and barabar have been living in liverpool since their wedding. 5.the mechanic has been fixing my car since morning. 6.i have been writing this report for half an hour. 7.the neighbors have been arguing for two hours. 8.andrea has been driving to work since she passed her driving test. 9.i have known jane since we were on holiday in thailand. 10.they have had this house for 5 years. 11.i haven't eaten meat for 6 months. 12.i haven't exercised for about 1 year. 13.i haven't had contact with my school friends since leaving for university. 14.i haven't eaten real home cooked food for 3 weeks. 15.i have been eating fast food since i returned from granny's. 16.i have had this bicycle since my last birthday. 17.the athletes have been running for an hour. 18.she has been using the stairs for a week. 19.she hasn't been using the elevator for a week.