1.keep a promise遵守诺言
2.keep a low profile保持低调
3.Keep calm保持冷静!
4.Keep it to yourself保密
5.Keep up the good work!继续加油!
6.Keep your mouth shut!闭上你的嘴!
7.keep one’s balance保持平衡
8.keep body and soul together维持生活
9.keep in mind记住，想着
