If you're happy (如果你幸福) If you are happy (如果你很快乐) If you are happy (如果你快乐) If you are happy(如果你很快乐) If you are happy(如果你快乐) If You Are Happy 如果你幸福 If you are happy(如果感到高兴) 11.If you're happy（如果你幸福） If you're happy if you are happy