Упражнение 3. Вставьте подходящий модальный глагол (must / can / need)

Привет! Давай разберемся с модальными глаголами. В упражнении нужно выбрать *must* (обязанность, долженствование), *can* (физическая возможность или разрешение) или *need* (нужда, необходимость). 1. Sonia **must** practise so much if she wants to take part in the marathon. 2. If you want to improve your English, you **must** work very hard. 3. You **need** not come to help them tomorrow: the work is done. (или *don't have to*, но из предложенных *need not* подходит для отсутствия необходимости). 4. You **need** not change the whole text as the beginning is all right. 5. John **need** not tell us the rules of the game: we know them. 6. We **cannot** (can not) afford to pay the bill. 7. It is already six o'clock. We **must** hurry if we don't want to be late. 8. She **can** decorate a room nicely. 9. You **must** take care of your parents. 10. We **can** stay with my brother when we are in Paris.