英语语法好的朋友帮我看看这几道题,用所给动词的适当时态填空!本人急用!

英语语法好的朋友帮我看看这几道题,用所给动词的适当时态填空!本人急用!____you often ______(come) to work by bus I _____(buy) a tape recorder yesterday .The plane for New York _____ (not take ) off yesterday._______ you ______ (go) to attend a meeting next week _______ you ______ (leave) for Shanghai next month?