Use may in the correct form followed by the appropriate infinitive. 1. ... I (to ask) you to explain the rule once more? 2. She asked me if she ... (to switch off) the radio. 3. I’m afraid it ... not (to stop) raining by the evening. 4. We wish your journey ... (to be) successful. 5. My neighbour lent me her opera-glasses that I ... fully (to enjoy) the ballet. 6. No matter how bad the weather ... (to be) she never missed her everyday stroll after dinner. 7. Don’t be angry with her. She ... (to do) it by mistake. 8. If nothing prevents them, they ... (to arrive) ahead of time. 9. It ... (to be taken) for a joke if his face had not been so serious. 10. You should not feel offended; they ... not (to notice) you. 11. Tell him he ... (to warn) me and not (to put) me in such an awkward position. 12. He ... (to have) to walk a long distance, he looks tired. 13. There is no regular ferry there. You ... (to have) to hire a boat.