--Well, honey, I'm sorry but I have to board on Iraq.--________, and God bless you when you are in Iraq.A.Enjoy yourselfB.Do take careC.Have a nice tripD.Mind your steps
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B解析句意：--亲爱的，对不起我真的要走了。--千万小心，上帝保佑你在伊拉克平安。根据“and God bless you when you are in Iraq”可推知B项更合情合理。