Translate the sentences. Pay attention to the predicate:

a) with a modal verb.

1. We must use new methods in our research work. 2. You may use this device in your laboratory. 3. This job cannot be done in time. 4. They ought to help their colleagues to solve this important problem. 5. He could not complete his research in time as he worked very slowly. 6. You should turn off the light before you leave the room.

b) with an equivalent of the modal verb.

1. The students were unable to do the work without their teacher’s help. He had to help them. 2. You needn’t take these documents with you. 3. You were to consult the dictionary. 4. He had to work much before he was able to complete his research. 5. You will have to show your research work to your scientific adviser. 6. Nobody was able to understand this mysterious phenomenon. 7. As the student was late he was not allowed to enter the classroom.

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