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