Question

it has being a / great honour to be / able to serve my country ? odd one out
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Answer 1

Answer:

odd one out - no odd one out is possible because without one oe the other phrase the sentence remains incomplete.

Explanation: hope it was useful.

Answer 2

I think it would be ‘it has being a’ because it’s grammatically incorrect. The whole sentence should be ‘It has been a great honour to be able to serve my country.’