Betty: Hi Alan. I've got a question. 1 Can your mobile phones in class?
Alan: No, we 2 mustn't. We 3 mustn't give our phones to the teacher at the beginning of the lesson. What about you?
Betty: We 4 mustn't have them in class, that's OK, but we 5 mustn't use them when the teacher is speaking, that's not possible. Our phones 6 must always be in our bags – that's the rule. In some classes we 7 must use them if we want, but only to look for words or information. But of course, we 8 mustn't look at social media or send text messages. The teacher doesn't like that!