Question

I didn't notice any serious _______of opinion among the debaters, although they___________from one another over small points. (differ)
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Answer 1

Answer:

I didn't notice any serious diffrence of opinion among the debaters, although they differ from one another over small points. (differ)

Explanation:

1) Diffrence is a noun and can be used in sentences like : The only difference between us is our mentality,as in fill up first.

2)Differ is to be of unlike or opposite opinion like : they differ on religious matters I beg to differ with your interpretationas in fill up second.

Answer 2

Answer:

The correct words use in the fill-ups are shown in bold word.

Explanation:

I didn't notice any serious difference (it is used as a noun) of opinion among the debaters, although they differed ( it is used as intransitive verb) from one another over small points.