参考答案：A

解析：习语辨析。get off使获释或减轻处罚：The attorney got her client off with a slap on the wrist．这位律师使她的当事人仅受到轻罚就获释了。get through通过，捱过：She got through the examination．她考试及格了。get by勉强通过，越过：just got by in high school中学勉强毕业。get away脱身，逃脱：I'm too busy to get away．我忙得脱不开身。