Adjective Clauses英交難題, 對不對的答案?

Complete the passage below with what, who, whose, where,which or that.

Young people (1)__ who__ studied abroad are moving back to Hong Kong. Today, many youngsters (2)__whose__ families moved to Australia, New Zealand or Canada in 1990s are now coming back to Hong Kong, as Hong Kong is having an advantage over the overseas countries (3)__ than__ it comes to postgraduate education because they can complete the course within one year, compared with the countries (4)___where__ they have been brought up need to take 2 year or more.

(5)__That__ is more, the job market in Hong Kong is much better than the cities (6)___which___ they have received education.

It is quite surprising (7)___who___ many local students do not like to stay in Hong Kong because they say that Hong Kong is a very competitive region and there is too much stress for young people to find a place for study or a post for job.

(8)___what___ choice is a better option for you? Going abroad or staying in Hong Kong?

可以的話幫我解釋這些句子,其實我有點不是很明白啊!