Aa a big headache～aware of 1
Bb back and forth～by way of 44
Cc call back～cut up 79
Dd day after day～dwell on 114
Ee each other～expert at/in/on 129
Ff face to face～from time to time 137
Gg get about/around～grow up 155
Hh hand down～hurry up 177
Ii if not～intent on 194
Jj judging by/from～just so 223
Kk keen on～kill time 227
Ll last but not least～lots of 236
Mm mad about/on～my treat 253
Nn name after～now that 265
Oo off and on～over and over（again） 275
Pp particular about～put up with 295
Qq quite a few/a lot 305
Rr rain cats and dogs～rush hour 305
Ss save one's breath～sure of/about 314
Tt take a leave～typical of 329
Uu uncertain of/about～used to 347
Vv vital to～void of 350
Ww wait for～would rather 351
Zz zip code～zip（sb./sth.）up 357