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 - 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
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