答案:A get off
get off的解释：If someone who has broken a law or rule gets off,they are not punished,or are given only a very small punishment.
get off
[口语](使)免受处罚；(使)逃脱处罚：
get through 结束,完成
get by
通过;设法;继续存在;过得去：尚可
get away
1.走开,离开：
2.逃走,跑掉；逃离犯罪现场：
3.休假：
4.(赛跑、竞赛等)起跑,出发；(汽车)出发：
5.拿开,拿走；使离去；送走(某人、某物)：