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Which of the sentences below are correct? I wonder whether 'as' is required or not.

I was assigned the treasurer of the class.
I was assigned as the treasurer of the class.

He was chosen the officer of the day.
He was chosen as the officer of the day.

It is spelled C-A-T.
It is spelled as C-A-T.
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AnonymousI was assigned the treasurer of the class.
I was assigned as the treasurer of the class.
For the meaning that I think you have in mind, neither seems right to me. I think you mean "I was appointed class treasurer."
AnonymousHe was chosen the officer of the day.
He was chosen as the officer of the day.
Both sound acceptable to me.
AnonymousIt is spelled C-A-T.
It is spelled as C-A-T.
"as" is unnecessary.
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Thank you for your answers. I really appreciate it.

When you said 'as' is unnecessary, it doesn't mean adding 'as' makes the sentence incorrect. Would you agree?

Also, for the verb 'assigned' followed by a noun, is 'as' in between necessary? I actually can't think of a good example for the verb in this structure, but I hope the following is correct.

He was assigned the cook for our dinner on Saturday.
He was assigned as the cook for our dinner on Saturday.

Are both sentences above acceptable? If so, which is preferred?
AnonymousWhen you said 'as' is unnecessary, it doesn't mean adding 'as' makes the sentence incorrect. Would you agree?
Yes (but I don't favour adding it).
AnonymousHe was assigned the cook for our dinner on Saturday.
He was assigned as the cook for our dinner on Saturday.

Are both sentences above acceptable? If so, which is preferred?
"He was assigned the cook for our dinner on Saturday" is not right for the meaning that I assume you want. It means that he was asked to manage / partner / look after / etc. the cook, not that he was the cook.

"He was assigned as the cook for our dinner on Saturday" is OK.
Everything is clear to me now. Thank you, Mr Wordy.
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