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Hello, teachers!

Would you please help me with these sentences?

[1] In these sentences, is 'to' optional, compulsive, or prohibited?
[2] In these sentences, is 'the' optional, compulsive, or prohibited?
Please mark with [O]ptional, [C]ompulsive, or [P]rohibited.

1-1. The boss promoted him (to) (the) personnel director by surprise.
1-2. The boss promoted him (to) (the) position of personnel director by surprise.
1-3. The boss promoted him (to) (the) personnel direction position by surprise.

2. The boss surprisingly got him promoted (to) (the) personnel director.

3. He was/got promoted (to) (the) personnel director.

Thank you very much.
Peace!
Comments  
I am not a teacher but a native speaker so...

1-1. The boss promoted him (to) (the) personnel director by surprise.
O & P

1-2. The boss promoted him (to) (the) position of personnel director by surprise.
C & C. You need a preposition.

1-3. The boss promoted him (to) (the) personnel direction position by surprise.
C & C

2. The boss surprisingly got him promoted (to) (the) personnel director.
O & P, but almost C & P. There's a chance of being misundertood as to who is the personnel director. Also, your use of "got" implies that the boss convinced someone else to promote him.

3. He was/got promoted (to) (the) personnel director.
O & O. However, "the" should be used only if it is clear what precise position he was promoted to, and you should either use "to the" or neither.
Thank you very much!
Enjoy the blue sky between clouds.