完形填空。Jackwasahard-workingstudentwhenhewasyoung，buthehad...
問題詳情：完形填空。Jackwasahard-workingstudentwhenhewasyoung，buthehadsomebigproblems.Heusedtobeshybeforehisclassmates.Sohehad__1__friendsatschool.Bobwasanewstudentinhisclass.Allthestudentsweresoonfamili...