Though having lived abroad for years, many Chinese still ________ the traditional customs.
A.performB.possessC.observeD.support在线课程C
考查动词。此处意思是“很多中国人仍然在庆祝传统习俗”，observe可表示“庆祝”之意。perform“表演”，possess“拥有”，support“支持”都不合句意。