True (T) or False (F)． (1)When people don't understand each other，body language can't be helpful. (　　) (2)Body language is very useful when communicating.(　　) (3)There is not a form of body language which is universal in the world. (　　) (4)People often use body language on purpose. (　　) (5)Different countries have different body languages.(　　) 答案：(1)～(5)　FTFTT