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[15.This is the first time we (be) to a casino. 16.They (talk) about nothing but politics for 4 hours. 17.Ever since she (retire), we (be) unable to find a replacement for her. 18. Who (open) this window? It's so cold here. [19.I'm afraid I (lose) my wallet when I (walk) home. 20.1 (ask) him about it for more than two days now and I still (not know) the answer. -21.(you see) any of these films before? -22.Before I (decide) to buy a plane ticket I (talk) to the head of the travel agency about it. 23.After I (discuss) my plans with Professor Watkins I (start) to work on my dissertation. 24. Which towns (you visit) so far? 25.(she be) in Paris in 1975? 26.We (go) away next week. 27.Somebody (bring) the package before they (go) out. 28.Mary (be) exhausted. She (work) non-stop since seven and (have) more and more customers. 29.My aunt (come) tomorrow.4s coming -30. When the new worker (come) to work drunk for the second time, the manager (dismiss) him on the spot. - 31.Sam's parents (hate) heavy metal music. They (say) it (drive) them mad. - 32.1 (pay) twice as much as I (expect). 33.When we (be) introduced to someone we often (shake) hands. 34.She always (smile) when I (wink) at her. -35.1 last (see) Mrs Brown when we (work) in Greece. - 36.It (be) two years since I last (see) him. 37.They (read) the news yesterday at this time. 38.1 (not enjoy) myself so much for ages. 39. When we (be) teenagers we always (understand) each other very well. 40.She (fail) the exam because she (not study) hard enough.​