4、everthoughtofthefollowingquestions?Whochooseyourfriends?Doyouchooseyourfriendsoryourfriendschooseyou?Haveyougotagoodfriendyourparentsdon'tlike?21. Manyteenagersthinktheir_______knowthembetterthantheirparentsdo.A.friends B. teachers C.brothersandsisters D. classm