改被动句！！再问一些！！

1.I heard them quarrel in the next room yesterday.
They were heard to quarrel in the next room yesterday.

2.What are you going to do tomorrow?
What are you going to be done tomorrow?

3.They are always taking good care of the children.
The children are always been taking good care of .

4.We have built many new roads in the past 10 years.
Many new roads have been built in the past 10 years.

5.You must make good use of time.
Time must be maken good use of .

6.They used to shut the shop on Monday.
The shop used to be shut by them on Monday.

7.A famous doctor is going to poerate on me.
I am going to be poerated on by a famous doctor .
8.A man robbed me of my cell phone.
My cell phone was robbed by a man.
9.You had better do the experiment now.
The experiment had better to be done now.
10.I didn't ask you to answer the question
The quest