1.This is the second article that I have written in English.
2.It is the best film that he has ever seen.
3.This is the very book that I want to read.
4.All that they told me surprised me.
5.They talked about the teachers and schools that they had visited.
6.Who is the girl that was there?
7.There is a bed in the room that is still vacant.
8.After ordinal number and superlatives.
9.After the following words:all,only,little,few,much,very,none,last,just,any(thing),every(thing),some(thing),no(thing).
10.After two or more antecedents,referring to both people and things.