1.I live next door to a couple whose children often make a lot of noise.
2.Do you like the book that/which I lent you last week?
3.This is the very factory that they visited last summer holiday.
4.When facing hardships,only those who are confident will achieve success.
5.The dishes that/which I cooked were mom's favorite.
6.We'll reach the sales targets in a month which/that we set at the beginning of the year.
7.This is the girl who/whom he works with in the office.
8.All that can be done has been done.