A. For every verb in your training utterances, ensure you add a version of the utterance which also covers the past, present, and future tense of the verb.

B. Add more utterances to the unresolvedlntent.

C. It is not always possible to achieve 100%confidence and adding more utterances may not help the problem. Therefore, do not make further changes to the skill if it is performing to your expectations.

D. Keep iterating on user testing and add more training utterances until you can achieve a confidence level of 100% on your user input.

E. The highest possible confidence with 10 intents is 10% (100% divided by the number of intents).So, no further changes to the skill are required.