选择最佳选项回答下列问题: A.Are you OK? B.I'm sorry! C.Nice 头 meet you! D.Thank you! E.Please! F.Excuse me! If you need to walk in front of someone , you will say ___. When you ask for something, you will say______. 3. When you receive something, you will say _______. 4. If you make someone else upset or sad, you will say _______. 5.If someone is having a bad day and you see him upset, you will ask______. 6.when you meet somebody, you will say ______.