. Use of English. A. Complete the sentences with the modal verbs let, must (mustn't), should (shouldn't), need(needn't), not to be allowed to, have to (don't have to). There is one extra verb. 1. People do smth to save our planet until it is too late. It is in danger... 2. Pupils to use their mobile phones when they are at the lessons.. 3. Tourists from Asia....... use an adaptor to charge their gadgets if they are in the UK. 4. You read this text. The questions will be asked about the dialogue only. 5.1.......... to ask for your charger as my phone battery has run out of power