16．听短文三遍，根据短文内容填写所缺的单词，每空一词，完成16-20小题．并将所缺单词用0.5毫米黑色签字笔填入答题卡相应的位置上．
Asking for information or help is a very common and（16）略 activity，especially when we visit a foreign（17）略．So knowing how to ask for information politely is important．In English，"Where are the restrooms？"and"Could you please tell me where the restroom are？"are（18）略requests-both are correct English，but the first sentence（19）略rude．It's important to use correct language，but sometimes this（20）略is not enough-we need to learn how to be polite when we make requests．
