问题补充：
- Im going on a trip to Singapore after the exam.
- Really? !
A. OK
B. Its nice of you
C. Congratulations
D. Have a fantastic time
答案：
A. OK
B. Its nice of you
C. Congratulations
D. Have a fantastic time
解析：句意：考试后我打算去新加坡旅行。真的吗？祝你过得愉快！A. OK 好的；B. Its nice of you你真是太好了；C. Congratulations祝贺；D. Have a fantastic time过得愉快。结合语境可知选D。
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