4、ourfriends?Doyouchooseyourfriendsoryourfriendschooseyou?Haveyougotagoodfriendyourparentsdon'tlike?21. Manyteenagersthinktheir_______knowthembetterthantheirparentsdo.A.friends B. teachers C.brothersandsisters D. classmates22. Whenteenagersstayalone,theusualwayofcommunicationist
6、ldrentomeettheirgoodfriends.B.Someparentsmayevenasktheirchildrentostayawayfromtheirgoodfriends.C.Someparentsmayevennotlettheirchildrenmeettheirgoodfriends.D.Someparentsmaywanttheirchildrentostoptomeettheirgoodfriends.24. Themainideaofthispassageisthat___________.A.Teenagersneedfriends B.