1. we were shown a very strange picture

2. everybody was invited to the big hall

3. these letters are revised, they are ready to be sent

4. they were met by the guide on a station and they were taken to the hotel

5. these magazines were returned to the library last week

6. in our lessons, a lot of attention is payed to pronunciation

7. Ivanov was asked to explain why he is skipping lessons

8. am I invited to your party?

9. children were left home alone