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.

А почему именно так:6. You wiil have to learn all the new words for the next lesson. 7. They decided that she would be to send them a telegram every tenth day.

6. wiil have to - for the next lesson: Ты должен будешь выучить все новые слова к следующему уроку. (Речь идет о действии в будущем, в крайнем случае, you are having to, но я считаю, что логичней will have to) 7. Согласование времен: decided - would be to

спасибо огромное

You are welcome!)))