raise ones eyebrowCross ones heartCross ones legs/arms Keep sb at arms lengthPut ones feet up1. Raise ones eyebrows at sthShow by the expression on your face , that you disapprove of or are surprised by sth e.g. Eyebrows were raised when he arrived at the wedding in jean.When he said he was leaving , there were a lot of raised eyebrows.2. cross ones heartUsed for emphasizing that you are sincere when making a promise , or that what you say is true.e.g. - dont tell anyone else about this, will you?- Cross my heart, I wont .3. pull ones face Produce an expression on your face to show that you dont like sth/ sb e.g. what are you pulling a face at now?4. drag one feetDo sty slowly or delay doing sty because you do not want to do it e.g. how much longer will the government go on dragging its feet about whether to invest more money in the railway?5. Keep sb at arms lengthAvoid becoming too friendly with sb (与某人保持距离)e.g. Hes the kind of man who is best kept at arms length.6. Put ones feet upRelax by sitting , or lying down ; enjoy a period of rest from work坐着（躺着）放松； 休息e.g. After work, I like to have a cup of tea and put my feet up.e.g. You have worked for this company for 35 years, Jack. Now its time for you to put your feet up.7. have / keep both/ your feet on the ground Have a sensible and realistic attitude to life 脚踏实地地； 讲究实际的 9. throw oneself at sb s feet 10. cross your finger e.g. He is always talking about his big plan to be an actor. You should tell him to keep his feet on the ground.8. run off ones feetBe very busy 奔忙；忙得马不停蹄In the last few days before Christmas , the sales assistants were rushed off their feet.9. throw oneself at sb s feetAsk for sb to help, protect or forgive you 拜倒在某人脚下（祈求某人帮助； 保护和原谅）e.g. Throw yourself on the mercy of the court, and they might not send you to prison .祈求法庭饶恕你吧， 他们也许不会判你入狱。10. cross your finger Hope sb will be successful ; wish sb good luck祈求成功；祝某人好运e.g. I am going to give my first lecture tomorrow, so keep your finger crossed for me, will you?