откройте скобки, образуя инфинитив в форме страдательного залога, по образцу?The university can (to see) from all parts of the city. 
The university can be seen from all parts of the city. 
1.The exam could not (to retake). 2. I must (to introduce) to the chief engineer. 3. The article can (to publish) next month. 4. This machine must (to test) again. 5. You may (to introduce) to each other at the party. 6. They must (to invite) to our meeting. 7. She needn’t (to give) a dictionary to translate the poem.

1.The exam could not be retaken. 2. I must be introduced to the chief engineer. 3. The article can be published next month. 4. This machine must be tested again. 5. You may be introduced to each other at the party. 6. They must be invited to our meeting. 7. She needn’t be given a dictionary to translate the poem.