Употребите глагол сказуемое в прошедшем времени, используя эквиваленты модальных глаголов.

1. We must take 8.30 train to arrive in time.

2. The children may go to the Zoo.

3. We can go to the park together.

1. We must take 8.30 train to arrive in time. - модальный глагол must не имеет формы будущего времени, но have to имеет, поэтому я решила заменить так - We had to take 8.30 train to arrive in time

2. The children may go to the Zoo. - The children might go to the Zoo

3. We can go to the park together. - We could go to the park together.