Make up sentences in the passive voice
1.The Pyramids (build) because people in Egypt believed in life after death.
2.More than 800 poems (write) by Pushkin.
3.I (introduce) to the participants of the confererence tomorrow.
4.Your room (clean) soon.

1. The Pyramids were built because people in Egypt believed in life after death.

2. More than 800 poems were written by Pushkin.

3. I shall be introduced to the participants of the confererence tomorrow.

4. Your room will be cleaned soon.