"practice in pair"means

practice in pairmeans pair与a pair of有啥区别.The teacher asks his students to practice English in——（一对）这里为什么只能用pair In practice In practice 24 Hrs in practice engaged in target practice put in practice是什么意思 practice in pairsmeans practice in pairsmeans practice in pairs practice in doing 和practice doing 区别 It took me over one hundred dollars to buy that pair of shoes.(同义句）I ______ over one hundred dollars in ______ that pair of shoes. do practice in drawing pictures LOOKING FOR SOME ONE.WHO SPEAKS ENGILSH AND PRACTICE CHINESE WITH ME,I’M CHINSES IN BEIJING. Can you help me ( )(practice) my English? practice practice Give me that pair of red socks.