Translate into English. Determine the Tense and Voice of the verb:

Determine the Tense and Voice of the verb:
l.They can be seen in our library every day. 2. The delegation is headed by the Prime Minister. 3. The child was often left home alone. 4. These houses were built last year. 5. All letters had been written when we came. 6. This film is much spoken about. 7. The machine is being tested now. 8. His work has been already finished. 9.1 was told to wait for him. 10.Your letter will have been answered by Monday. 11. The experiment was being carried out from ten till twelve o'clock. 12.Children under sixteen will not be admitted here.