问题

having lived abroad for years, many Chinesestill_______the traditional customs
A:Astill tongue makes a wise head
B:A single flower does not make a spring
C:Allgood things come to an end
D:All that glittersis not gold
B:A single flower does not make a spring
C:Allgood things come to an end
D:All that glittersis not gold
正确答案是: