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