1. My sister (fell/has fellen) off her bike lately
2. They (came /have come ) back just now
3. We (heard /have heard ) this tune many times

викамяу3: ты не мог бы помочь мне еще : 6. Our teacher ( was /has been) to Britain several time . 7 . We ( did /have done ) it the day before yesterday . 8 . lt 's the third time I ( drove /have driven ) a car