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