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Change from the active into the passive. 1.Tchaikovsky used many folk-tunes in his compositions.2. The agronomist has

1. Many folk-tunes were used in Tchaikovsky\'s compositions.

2. New methods of work in agriculture have been introduced by the agronomist.

3. A recently devised apparatus was showed to the students by the lecturer.

4. The children must be looked after by all of us.

5. The Russian delegation was given a hearty welcome by the population of France.

6. I was asked to help the gardener in the garden.

7. The English text is being translated by the students of this group.

8. Their work was finished earlier than usual.

9. A telegram has been sent to him.

10. The problem was being discussed by the students at 6 o’clock yesterday.

11. A new English dictionary must be bought.