С. перепишите следующие предложения: а) подчеркните в каждом из них модальный глагол или его эквивалент; б) переведите его; в) поставьте глагол- сказуемое предложения в past indefinite, употребляя модальные глаголы и их эквиваленты. 1.all the students must pay for their education, examinations, books, the use of libraries. 2. not many children from the working families are able to get higher education. 3. she cannot do this work in time.

1.All the students must (должны) pay for their education, examinations, books, the use of libraries. All the students had to pay for their education, examinations, books, the use of libraries.

2. Not many children from the working families are able to (могут) get higher education.
Not many children from the working families were able to get higher education.

3.  She cannot (не может) do this work in time. She could not (couldn't) do this work in time

1 must-должен (Past had to)
2 are able могут (were able или could)
3 cannot-не может - couldn't