Part 1: Rewrite these sentence: EX: It is a long time since we last met. => We haven't met a long time since we last met. 1. This last time she came back to her hometown was 4 years ago. => She hasn't............................................................................................................ 2. He started working as a bank clerk 3 months ago. => He has................................................................................................................. 3. It has been 5 years since we first flew to Singapore. => We have................................................................................................................ 4. I last had my hair cut in November. => I haven't................................................................................................................ 5. The last time we called each other was 5 months ago. => We haven't............................................................................................................. Giúp em giải đi em cho 5sao