Вставьте must/mustn’t по смыслу предложения. 1. You _____ light fires in the forests. 2. You _____ do your homework. 3. You _____ wash your face every morning. 4. You _____ drink cold water. 5. You _____ be late for class. 6. You _____ listen to your teacher. 7. You _____ give place to old people. 8. You _____ be polite.