1. the last time we saw her was on Christmas day.
- we haven't ................................
2. i haven't caten this kind of food before.
- this is .................................................
3. it stared raining can hour ago.
- it has ...............................................
4. we haven't visited my grandfather for two months.
- the last time .....................................
5. i have studied english for three years.
- i began .....................................................
6. my brother has seen his best friend for nearly five years.
- it's ...........................................................