Viết lại câu không thay đổi nghĩa: 1) This is the first time he went abroad. => He hasn't.... 2) She started driving 1 month ago. => She has. 3) We began eating when it started to rain. =>We have..... 4) I last had my hair cut when I left her. => I haven't....... 5) The last time she kissed me was 5 months ago. => She hasn't.......
