I have to finish my homework before I can go out with my friends.She has to wake up early tomorrow for her flight.They have to study for their exams next week.I had to leave the party early because I wasn't feeling well.He had to work late last night to finish a project.She had to cancel her plans because of a family emergency.We will have to pack our bags tonight for our trip tomorrow.They will have to pick up their tickets at the box office before the show.I will have to call the plumber to fix the leak in the bathroom.