Question

Using the Perfect Tenses. Passive voice
11. Have you touched anything here?
12, The sociologist has interviewed a lot of students.
13. Have they tested all the machines?
14. The flood has caused considerable damage.
15. John will have received the papers by tomorrow.

Answer 1

Perfect Tenses in Passive Voice

Ответ:

11. Have you touched anything here?

   Has anything been touched here?

12. The sociologist has interviewed a lot of students.

A lot of students have been interviewed by the sociologist.

13. Have they tested all the machines?

  Have all the machines been tested?

14. The flood has caused considerable damage.

   Considerable damage has been caused by the flood.

15. John will have received the papers by tomorrow.

    The papers will have been received (by John) by tomorrow.

Объяснение:

Present Perfect Passive образуется по схеме:
       have/has + been + смысловой глагол в 3-ей форме