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1. ''Helen would you like to come to lunch on Sunday?'' Asked Mary. The word is IF

This is my supposition - Mary asked Helen if she would like to come to lunch on Sunday.(We don't change would in reported speech.
2.'' You are not allowed to smoke in your room, ***,'' said his mother. The word is forbade
My opinion - ***'s mother forbade him to smoke in his room.
3. Sue thought it would be a good idea for me to see a doctor.The word is advised
My supposition - Sue advised me to see a doctor.
4.The minister proposed regular meetings for the committee.The word is suggested
My opinion - The minister suggested that committee should meet regularly.
5. Jack demanded urgent action from the police. The word is DO
This is what I think - Jack demanded to do somethin urgently
6. My bank manager invited me to visit him at home. The word is could
I am not sure about this sentence but this is what my mind made up - My bank manager tell me that I could visit him at home.
7.''No, I really don't want to stay the night,Sophia,''Ann said.The word is Staying
My supposition is - Ann insisted on not staying the night at Sophia's house. I wonder is it correct or not.
8.''I'll call off the football match if you don't behave'' the teacher said.The word is threatened
My supposition is the following sentence - The teacher threatened to call off the football match unless the children's behaviour improved.
9.''Ok.Mum,I'll do my homework,I promise'' said Laura.The word is that
My supposition is - Laura promise that she will do her homework.
10.'' Congratulations on getting engaged,Sue'' said Harry. The word is congratulated
In my opinion - Harry congratulated Sue for her engagement.

If somebody thinks that I don't think in the right way let's correct me !
Comments  
If I understand the rules aright:

#1-- yes
#2-- yes
#3-- yes
#4-- yes but 'the committee'
#5-- NO. Try again
#6-- NO. Try again.
#7-- yes, probably. There may be a better way.
#8-- yes, but you didn't have to change 'behaved'
#9-- 'promised that she would'
#10- 'on her engagement.
8.''I'll call off the football match if you don't behave'' the teacher said.The word is threatened
My supposition is the following sentence - The teacher (.......................) the children's behaviour improved.This is the statement that the exercise requires.
5. Jack demanded urgent action from the police. The word is DO
Is it true - Jack demanded the police to do something urgently
6. My bank manager invited me to visit him at home. The word is could
I am not sure about this sentence but this is what my mind made up - My bank manager(.........................) visit him at home. It is too hard for my knowledge to make up the correct transformation.
Students: We have free audio pronunciation exercises.
Oh. OK, then.
Could you do 6 ,7 and 5 ? Because it seems to me very difficult
#5-- Jack demanded (that) the police do something at once.
#6-- My bank manager asked if I could visit him at home.
#7-- Anne demurred at staying at Sophie's for the night. -- (??)
Students: Are you brave enough to let our tutors analyse your pronunciation?
7.''No, I really don't want to stay the night,Sophia,''Ann said.The word is Staying
The excerse reuqires - Ann insisted (........................) the night at Sophia's house.
Ann insisted on not staying the night at Sophia's house.

9. Laura promised that she would do her homework.

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