Вопрос:

Rewrite the sentences by replacing the underlined expressions with the correct modal verb (couldn't, can, need, needn't, ought to, must).

Фотография

Ответ ассистента

1. Richard can solve maths problems very quickly. 2. You needn't stay in the exam hall after you have completed the test. 3. You ought to seek help if you are having problems understanding something. 4. She couldn't have been nasty to the other children. 5. You must have a computer password. 6. Students must be on time for class.

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