【编者按】威廉希尔app 英语四六级频道为大家收集整理了“2012英语六级听力常用K类习语”供大家参考，希望对大家有所帮助!
K
keep an eye on小心，关注
keep in shape保持健康
keep it between two of us这只是你我之间的事情
kill two birds with one stone一石二鸟