In_______to his flat in London, he has a villa (别墅) in Italy and a castleadditonally additon additonal add

问题描述:

In_______to his flat in London, he has a villa (别墅) in Italy and a castle
additonally
additon
additonal
add

应该是In addition to,固定用语
in addition to
除…之外(还有)