2. Change the sentences to the Past or Future Tenses using the modal verb have to. 1. Imust fly to India now. (next month) 2. We must go and buy some painkillers. (last night) 3. Drake must sign the contract today. (tomorrowоw) 4. I must water the plants now. (yesterday) 5. Not necessary mend a broken window. (tomorrow morning) 6. You must pay the rent today. (last Friday)