问题补充：
--- We’re going to play on Huaguo Mount this week.
--- Really? !
A. Enjoy yourselves
B. Congratulations
C. It’s nice of you
D. Come on
答案：
(答案→)A. Enjoy yourselves
B. Congratulations
C. It’s nice of you
D. Come on
解析：句意：这一周我们将去花果山玩耍。真的吗？玩得开心点。交际用语中，当听说别人要去做某事时，要表示祝他们玩的开心，故选A。
