Passive Voice question
Hi, could you please check if I transformed these sentences into P.V. correctly. Thanks a lot!

1. My friend kept me a first-row ticket.
The first-row ticket was kept by my friend.
I... = I was given the first-row ticket by my friend.

2. His boss always buys employees doughnuts after making a good agreement.
Doughnuts ... = were always bought by my boss after making a good agreement.
Employees = were always given doughnuts after making a good agreement.

3. The realtor will show the customer a new apartment in the city center.
The new apartment ... = will be shown by the realtor.
The customers ... = will be shown a new apartment.

4. I haven't sent the report to the Head of the Department
The report... = had not been sent to the Head of the Department
The head of the Department ... = had not been sent the reports to.

5. Mother always read fairy tales to their children
Children ... = are always read fairy tales to.
Fairy tales ... = are always read by mother.

6. My brother had saved some cake for his friend before he went to bed.
Some cake... = had been saved by my brother for his friend before he went to bed.
My brother's friend... = had been saved some cake for.

7. His secretary will make the arrangement for him next Monday.
He... = He will be made the arrangement for next Monday.
The arragement... = The arrangement will be made for him next Monday.

8. You had sent your CV to HR manager before calling him.
Your CV... = Your CV had been sent to the HR manager before calling him.
HR manager ... = HR manager had been sent the resume to before calling.

Question

Passive Voice question
Hi, could you please check if I transformed these sentences into P.V. correctly. Thanks a lot!

1. My friend kept me a first-row ticket.
The first-row ticket was kept by my friend.
I... = I was given the first-row ticket by my friend.

2. His boss always buys employees doughnuts after making a good agreement. 
Doughnuts ... = were always bought by my boss after making a good agreement.
Employees = were always given doughnuts after making a good agreement.

3. The realtor will show the customer a new apartment in the city center.
The new apartment ... = will be shown by the realtor.
The customers ... = will be shown a new apartment.

4. I haven't sent the report to the Head of the Department 
The report... = had not been sent to the Head of the Department
The head of the Department ... = had not been sent the reports to.

5. Mother always read fairy tales to their children
Children ... = are always read fairy tales to.
Fairy tales ... = are always read by mother.

6. My brother had saved some cake for his friend before he went to bed.
Some cake... = had been saved by my brother for his friend before he went to bed.
My brother's friend... = had been saved some cake for.

7. His secretary will make the arrangement for him next Monday.
He... = He will be made the arrangement for next Monday.
The arragement... = The arrangement will be made for him next Monday.

8. You had sent your CV to HR manager before calling him.
Your CV... = Your CV had been sent to the HR manager before calling him.
HR manager ... = HR manager had been sent the resume to before calling.

Answer

A valiant attempt - but I have to ask: Where on Earth did you get this activity from?  None of this language is authentic/natural!

1. My friend kept me a first-row ticket. 
The first-row ticket was kept by my friend.
I... = I was given the first-row ticket by my friend.  - Doesn't work. Keep and Give are totally different actions.

2. His boss always buys employees doughnuts after making a good agreement.  -> reaching a successful agreement 
Doughnuts ... = were always bought by my boss after making a good agreement. ->  were always bought for the employees after....
Employees = were always given doughnuts after making a good agreement.  were always bought ...

3. The realtor will show the customer a new apartment in the city center.
The new apartment ... = will be shown by the realtor. -> in the city centre will be shown to the customer
The customers ... = will be shown a new apartment. - in the city centre

4. I haven't sent the report to the Head of the Department 
The report... = had not been sent to the Head of the Department -> hasn't been sent
The head of the Department ... = had not been sent the reports to. - Hasn't been sent the reports.

5. Mother always read fairy tales to their children
Children ... = are always read fairy tales to.  _The children were always read (past simple) fairy tales.
Fairy tales ... = are always read by mother. ...were always read to the children

6. My brother had saved some cake for his friend before he went to bed.
Some cake... = had been saved for my brother's friend friend before my brother went to bed. (cant use 'he' because you can't tell if thats the brother or the friend
My brother's friend... = had been saved some cake before my brother went to bed