1)explain whether the following items should be included in the calculation of HK's gross domestic product(GDP):
a)sewage charge(污水處理費)
b)the incresase resale value of residential units due to a boom in the property market
c)the salary of a HK citizen employed by a foreign airline
d)the rent paid by a foreign airline for using the premises owned by a HK company
答倒幾多就答幾多啦^v^
最好用英文答啦.盡量吧!