Поставьте must, mustn't, have to, don't have to или doesn't have to вместо ... 1 it's a secret. You ... tell it to anyone.
2 you ... respect your parents
3 she is very rich. She ... go to work
4 this party is free. You ... Buy any tickets.
5 this is the last bus for Paris and we ... miss it.
6 you ... be on time for exam.
7 they ... eat too much cake.
8 we're going to the restaurant, so our mother ... cook tonight.
9 you ... forget to turn off the light before you leave.
10 it's getting late. I think I ... go now.
11 boys and girls, you ... hand in your essays by Thursday.
12 Tom ... take a bus because his dad drives him to school every morning.
13 you ... tell me lies. It's just awful.
14 we ... tidy up our room because our sister did it yesterday.
15 you ... smoke on board the plane.


Спасибо
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Конечно, вот подходящие модальные глаголы для каждого предложения:

1. it's a secret. You mustn't tell it to anyone. ("mustn't" указывает на строгий запрет делиться секретом.)

2. you must respect your parents. ("must" выражает обязанность или необходимость уважать родителей.)

3. she is very rich. She doesn't have to go to work. ("doesn't have to" означает отсутствие необходимости делать что-то, в данном случае - работать.)

4. this party is free. You don't have to buy any tickets. ("don't have to" подчеркивает, что покупка билетов не требуется.)

5. this is the last bus for Paris and we mustn't miss it. ("mustn't" указывает на необходимость избегать определенного действия, здесь - пропуска автобуса.)

6. you must be on time for exam. ("must" подчеркивает необходимость быть вовремя на экзамене.)

7. they mustn't eat too much cake. ("mustn't" предполагает запрет на чрезмерное употребление торта.)

8. we're going to the restaurant, so our mother doesn't have to cook tonight. ("doesn't have to" означает отсутствие необходимости делать что-то, в данном случае - готовить.)

9. you mustn't forget to turn off the light before you leave. ("mustn't" подчеркивает важность не забыть выключить свет.)

10. it's getting late. I think I must go now. ("must" выражает сильное чувство необходимости уйти.)

11. boys and girls, you must hand in your essays by Thursday. ("must" указывает на обязательность сдачи эссе до четверга.)

12. Tom doesn't have to take a bus because his dad drives him to school every morning. ("doesn't have to" означает отсутствие необходимости делать что-то, здесь - ездить на автобусе.)

13. you mustn't tell me lies. It's just awful. ("mustn't" подчеркивает строгий запрет на ложь.)

14. we don't have to tidy up our room because our sister did it yesterday. ("don't have to" означает отсутствие необходимости в уборке, так как это уже сделала сестра.)

15. you mustn't smoke on board the plane. ("mustn't" используется для указания на строгий запрет курения на борту самолета.)