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.............................................................................................................