41. feel like - have a desire or wish for

　　42. feel up to - feel well enough to or be capabele of

　　43. few and far between - not happening often; rate

　　44. figure out - determine; reason out by thinking

　　45. fill in for -take another’s place

　　46. fill sb.in - tell what sb. should know

　　47. fish out of water - out of one’s element or natural environment

　　48. flying colors -success,victory

　　49. for good - permanently; forever

　　50. for the time being - for now; temporarily

　　53. get the ball rolling - start something; make a beginning

　　54. get the hang of - understand; learn

　　55. give a hand - help

　　56. go without saying - understood; clear without needing to be stated

　　57. go off -begin to ring

　　58. hang on - keep hold of; persevere;keep doing something

　　59. hard to come by - difficult to obtain

　　60. have a heart - have kind feelings; be understanding