phải giải thích nha Viết lại câu sao cho nghĩa không đổi. 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............................................................................................................. 6. It is a long time since we last met. => We haven't............................................................................................................. 7. When did you have it? => How long...........................................................................................................? 8. This is the first time I had such a delicious meal. => I have never................................................................................................................ 9. I haven't seen him for 8 days. => The last................................................................................................................ 10. To day is Saturday. I haven't taken a bath since Wednesday. => It is........................................................................................................................