Ответ:

1. They will read out the names of the winners in tomorrow's show.

The names of the winners will be read out in tomorrow's show.

2. The shop assistant offered a refund to the customer.

The customer was offered a refund (A refund was offered to the customer).

3. Look! someone has broken the vase.

Look! The vase has been broken.

4. The police are investigating the murder.

The murder is being investigated by the police.

5. Candidates must write their answers in ink.

Answers must be written in ink (by the candidates).

6. The judge shouldn't have postponed the hearing.

The hearing shouldn't have been postponed (by the judge).

7. They said that he was innocent.

He was said to be innocent.

8. They make all of the components in foreign factories.

All of the components are made in foreign factories.

9. I don't like people lying to me.

I don't like being lied to.

10. Picasso painted Guernica in 1937.

Guernica was painted by Picasso in 1937.