Change the sentences into the passive voice
1. the teacher asked the stadents a very difficult qestionat the oral exam
2. Did they repair all the windows?
3. The news surprised us all
4. Someone stole my purse while l was doing the shopping. ​

The students were asked a very difficult question by the teacher at the oral exam. ИЛИ A very difficult question was asked by the teacher at the oral exam. Were all the windows repaired? We were surprised by the news. My purse was stolen while l was doing the shopping. ​