英语六遥听力必备习语(4)　　备考时，若能掌握一定的习语，便能起到事半功倍的遥。
本文为大家整理了部分常考习语，希望大家认真记忆，多加练习。
　　hard to come by - difficult to obtain 　　keep onesfingers crossed - wish that nothing goes wrong 　　keep on ones toes - be ready for action; prepared 　　ill at ease - uncomfortable 　　in hot water - in trouble 　　in the air -uncertain 　　have a heart - have kind feelings; be understanding 　　have a hunch - have an idea based on feelings rather than reason 　　hold off - delay;postpone 　　hop to it - get started on something quickly 　　hit it off - get along well with someone 　　ins and outs - all the details; the various parts and difficulties to be seen 　　iron out - remove the difficulties or find an answer for 　　jump to conclusions - arrive too quickly at a decision or opinion 　　keep an eye on - watch closely 　　in the dark - keep someone without knowdge; information from somenoe 　　in the lone run - looking toward the future; eventually 　　go without saying - understood; clear without needing to be stated 　　go off -begin to ring 　　hang on - keep hold of; persevere;keep doing something 　　knock oneself out - make a great effort 　　learn the ropes - learn the rules and routines of a place or activity 　　mean to - intentional; on purpose 　　might as well - to have no strong reson not to 　　hang on - keep hold of; persevere;keep doing something 　　hard to come by - difficult to obtain 　　have a heart - have kind feelings; be understanding 　　little by little -gradually 　　make ends meet - to get just enough money for noes needs 　　make out - manage;get along 　　have a hunch - have an idea based on feelings rather than reason