1.This is the family photo I took last year.
2.My beard grew during my trip.
3.This is the bus that they took.
4.They are the ones who helped us.
5.This is the house we used to live in.Do you still remember?最后一句的once呢？句子里要用到是么？那就这么说：This is the house we once lived in. Do you still remember?