Viết lại câu không thay đổi nghĩa: 1) This is the first time he has gone abroad. => He has ................................................................................................. 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 wrote to me was 5 months ago. => She hasn't............................................................................................... 6) It is a long time since we last met. => We haven't................................................................................................ 7) When did you repair it ? => How long .................................................................................................? 8) This is the first time I had such a delicious meal . => I haven't..................................................................... 9) I haven't seen him for 8 days. => The last ....... 10) I haven't taken a bath for 2 days. => It is ..................................