4. They had a quarrel yesterday. 5. She is having a music lesson now. 6. He had to take four exams. 7. Next week you’ll have to prepare for your last exam. 8. She had to wait for a long time. 9. We have to arrange everything by tomorrow. 10. He had to pay a lot of money for this TV set. 11. They will have to start tomorrow morning. 12. He has to work a lot at his English.