Вставьте модальные глаголы to have to або to be to:
1. Where ... the lecture to take place? - I suppose in the assembly hall. 2. The meeting ... to begin at five o\'clock. Don\'t be late. 3. I ... to help my friends with this work now, so I cannot go with you. 4. It was raining hard and we ... to wait until it stopped raining. 5. Why didn\'t you tell me that I ... to buy the books? 6. You ... to learn all the new words for the next lesson. 7. They decided that she ... to send them a telegram every tenth day. 8. Who ... to go to the library to get the new books? - I was, but I couldn\'t because I ... to finish some work at the phonetics laboratory. 9. It is raining. You ... to put on your raincoat.