What is the passive form of these sentences?

Question

mary is going to help the boy.

mary will have helped the boy

mary had helped the boy

mary was helping the boy

urgent

Answer 1

The boy will be helped by Mary.

The boy will have been helped by Mary.

The boy had been helped by Mary.

The boy was helped by Mary.

Answer 2

i think it is:

The boy will be helped by Mary.

Answer 3

The boy is going to be helped by Mary.

The boy will have been helped by Mary

The boy had been helped by Mary

The boy was being helped by Mary

Answer 4

1) The boy is going to be helped by Mary.

2) The boy will have been helped by Mary.

3) The boy had been helped by Mary.

4) The boy was being helped by Mary.

These are perfectly right sentences.

In the first sentence "will" can be used in place of "Going to"

Hey, Elmyr your last sentence is wrong. I m sure know the right answer and I think you made a mistake while typing.