【正文】
someone asks you the way? You are supposed to show the way politely. 4a Complete the sentences with the phrases in the box. be supposed to be expected to be impolite to 1. When you go abroad, it __________ bring your passport. 2. After class, students ___________ clean the chalk off the blackboard. 3. If you visit the northern coast of Norway during the winter season, it __________ pack warm clothes. 4. If there are people in the meeting room, you __________ knock before entering. 5. In many eastern European countries, you __________ take off your gloves before shaking hands. 4b Complete the sentences with the