Use the suitable perfect tense (Present, Past, Future) in the given blanks.She _____________________ (recover) from her surgery by the time we visit her next Saturday.When we meet again next week, I ______________________ (practice) tennis for at least a month.By the time you received this letter yesterday, Sarah ___________________ (leave) for Turkey.Sam ________________ (drive) for six hours when he went to the village last month._____________________ (you / see) the news? You won’t believe your eyes.I ____________________ (work) for big companies like this before. I know how they operate.They ____________________ (live) in New York for three years before they moved to Leads three months ago.By this time next year, I _________________________ (finish) the course of the first semester.She ___________________ (purchase) a new car last month by her savings.John _____________________ (give) me an expensive watch as my birthday present.