将下列句子改成被动语态

1、The parent has been informed of the exam date.
第2句和第3句你打错了。个人认为应该分别为：
2、He reminde me of the premise I had made at the meeting.
3、Three man robe the bank of 3000000 dollars .
改成被动语态分别为
2、I was reminded of the promise I had made at the meeting.
3、The bank was robbed by three men of 3000000 dollars.
4、The house must be got rid of as soon as possible.
5、Your son should be cured of bad habit.
6、He has been warned of the danger.

The parent has been informed of the exam date.
I was reminded of the promise I had made at meeting.
The bank was robbed of all its money by three men the other day
The house must be rid of the terrible smell as soon as possible
Your son should be cured of that bad habit
He has been warned of the danger

The parent has been informed of the exam date.
I was reminded of the promise I had made at meeting 3000000 dollars by him
The bank was robbed of by three men
The house must be ridded as soon as possible
Your son should be cured of bad habit
He has been warned of the danger