—John and I will celebrate our fortieth wedding anniversary next month.
—Oh, ！
A. cheer up
B. well done
C. go ahead
D. congratulations
网友回答
A. cheer up
B. well done
C. go ahead
(答案→)D. congratulations
解析：考查交际用语。A振作起来；B做得好；C去做吧！D祝贺你！根据句意可知D正确。句意：—约翰和我下个月将庆祝我们的40个结婚纪念日。—祝贺你。