$\text{GIẢI THÍCH CHI TIẾT , GIẢI THÍCH KO DỊCH }$ $\text{Rewrite the following sentences not to change their meanings}$ $\text{1. This is the first time he went abroad}$ $\text{= > He hasn't______________________}$ $\text{2. She started driving 1 month ago}$ $\text{=> She has____________________}$ $\text{3. We began eating when it started to rain.}$ $\text{= > We have _________________}$ $\text{4. I last had my hair cut when I left her}$ $\text{= > I haven't ______________________ }$ $\text{5. The last time she kissed me was 5 months ago}$ $\text{= > She hasn't _________________ }$