可以幫我check一句文法是否錯誤嗎？

Sorry guys - I'm afraid both of the answers above mine are wrong. And to the poster - the two sentences are wrong as well.
The more correct way would be:
'Which countries have contributED to Hong Kong?'
'What contributions have other countries made to Hong Kong?'
The first poster said Which countries have contribution to Hong Kong ? - to use 'which' is correct. However, a verb should always follow 'have', such as 'have done', 'have seen' - this is past participle. So to have a noun 'contribution' following 'have' (a verb by itself) in this past participle sentence is incorrect.

The 2nd poster - What are the countries have been contributed to HK? - It would be correct if it's 'What are the countries THAT have been contributING to HK?' This would make the sentence a past-continuous one, and in an accusative form (ie. which country IN PARTICULAR have contributed to HK?)
貢獻 - contribution (noun). To describe the action of 貢獻, it is 'to MAKE a contribution'. Same case as 'to MAKE a donation' - it requires a verb.
With your sentences:
what countries contribute to Hong Kong? - must add '-ed' to contribute as it is now a verb. Past tense needed (ie. it has happened already).
what are the countries contribute to Hong Kong? - must add '-ing' to contribute as it is also now a verb but it's present-continuous (ie. it's happening now and will be happening in the future)
Hope that makes sense.

The first one is correct. There is no grammatical mistake.
For the 2nd sentence, there are 2 verbs. Therefore it is wrong. If you want to make it correct, you must change like this:

What are the countries have been contributed to HK?

what are the countries contribute to Hong Kong ?
1. We should use “which” countries, not “what” countries
2. 貢獻 is a noun, so we should use a noun too – contribution.
So, your sentence should be changed to :
Which countries have contribution to Hong Kong ?