things have changed a lot in hong kong since its_______ (回归)

things have changed a lot in hong kong since its_______ (回归) I bought a lot of things during my stay in Hong Kong改为同义句 i bought a lot of things during my stay in hong kong.改为同义句 things have changed a lot in the town.还是things have been cha Hong Kong has changed a lot after its _________(return)to Ch Hong Kong has changed a lot over the years同义句 Nanjing changed a lot in 2004.(用since改写) A lot of things （ ）in China since 1978 A.was happened B.have 刚才所说延续性动词,例如i have been in Hong Kong since last week. but a lot has changed since then and since things have changed in our culture toward people o i have changed a lot