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After receiving (A) a hospital bill, the patient questioned (B) an error in (C) the charges and received (D) the reimbursement from the hospital.

According to the answer key, (D) is incorrect. I think reimbursement is a count noun and a general subject matter, so I would correct it to a reimbursement. Is that right?

I also wonder why not use the hospital for (A) because I think it can refer to a specific item . Please advise.
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Hi,
There are a number of possible permutations here that are correct.
I think the examiner wants you to correct D to a reimbursement, or the more general reimbursement.

As regards the phrase 'a hospital bill', I think the examiner wants to talk about a bill that has not been previously mentioned, and thus does not want you to change 'a' to 'the'.
In many of these types of test, you have to try to read the examiner's mind a bit.

Best wishes, Clive

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Comments  
I am not sure if Iunderstand your question.
All these are possible answers, right? where is the question?

(A) a hospital bill, the patient questioned
(B) an error in
(C) the charges and received
(D) the reimbursement from the hospital.
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 Clive's reply was promoted to an answer.
GoodmanI am not sure if Iunderstand your question.
All these are possible answers, right? where is the question?

(A) a hospital bill, the patient questioned
(B) an error in
(C) the charges and received
(D) the reimbursement from the hospital.


I forgot to tell you that this is a find-an-error question. We have to find something wrong out of these four underlined words or phrases.