Defining and non-defining relative clauses 問題 勁急!Thanks!

1.

He came to Hong Kong to promote his book which is called "The Definitive Book of Body Language".

This time he came with his wife Barbara Pease, who is also a body language expert.

Barbara Pease , who has published more than 15 books, is a well-known trainer for international companies.

He said she is the person who he works best with.

2.

Dr Desmond Morris, who is a well-known zoologist, has published a number of books on animal behaviour.

The most well known book "The Naked Ape", which has been translated into 23 languages, was published in 1967.