阅读理解。 Different countries and different people have different manners (礼貌). We must know their customs (风俗习惯), or they will think we are ill-mannered (不礼貌). If you visit a Chinese family, you should knock at the door first. When the door is opened, you can't move before the host (男主人) says 'come in'. After you enter the room, you shouldn't sit down until the host asks you to take a seat. Before entering a house in Japan, you should take off your shoes. But in European (欧洲) countries, you don't take off your shoes. In a Malay house, a visitor can't eat up (吃光) the food on the table. But in England, you should eat up all the food. This may make the host happy. 根据短文内容，判断正（T）、误（F）。 (     )1. Different countries has different customs. (     )2. You can come in without (没有) knocking at the door in China. (     )3. You should take off your shoes when entering a Japanese family. (     )4. You can't sit down if a Chinese man doesn't let you have a seat. (     )5. If you eat up all the food in Malay, people think you are mannered.