`4.` That man, whose name I don't remember, is an artist
`5.` The chair in which I was sitting suddenly collapsed.
`6.` A girl who was injured in the accident, now in the hospital.
`7.` The man who came here last week, is living next door to us.
`8.` This is a story of a man whose wife suddenly loses her memory.
`9.` A man for whom I was waiting didn't turn up.
`10.` I was sitting next to the man who talked all the time on the plane.
`11.` That is the school library which was built in 1998.
`12.` Here are the books on which are wild animals in Africa.
`13.` This is the woman athlete whose record was admirable.
`14.` The 22nd Sea Games, which a lot of international athletes came to complete, was organized in Vietnam.
`15.` That is my E teacher, who comes from England.
`16.` These books, which my mother bought, are mine
`17.` Do you know that man, whom you met at Lan's party ?
`18.` Neil Armstrong, who first walked on the moon, lived in the USA.
`19.` Mr Khoa works for a company which makes motorbikes.
`20.` This is the house where he was born.
Good luck with your studies ^ ^