26. In the United States, what question is top secret?In the United States,_____is top secret.27. How do people think about inquiring about one's property?It is also considered_______about one’s property.28. What can't you ask when someone shows you something that he has bought?You can't inquire about the______.29. What would people in the United States feel if you ask their age?They will feel________, especially ladies and the old.30. What should we do before going to the States?We should get familiar with the American idea of_______.