1.now ----then 2.behind------in front of 3.big------small 4.larger -----small 5.early -----late 6.take-------fetch 7.different------same 8.woman ------man 9.aunt-------uncle10.under------on 11.rude ----- polite 12.last------next 13.few -----many 14.quickly ----slowly 15.come------go 16.good----bad 17.buy-----sell 18.dark-----bright 19.little------much 20.lend ------borrow 21.later------earlier 22.everybody -----nobody 23.inside------outside 24.worst ------best 25.win-----lose26.hard 27.cold 28.nephew 29.old 30,private