Из перечисленный слов, выберите нужное 
1. My brother ____ go shopping once a week. ( may, have to, has to)
2. _____ i have another of juice? ( do, am, may)
3. You ____ be polite. ( may, have to, has to)
4. You _____ go for a walk. It is very cold outside. ( may not, may, can)
5. Does she _____ work on Sundays? ( may, have to, has to)
6. You ____ visit your friend at the weekend if you like. ( may, have to, has to)