Yes, if it is the infinitive of the verb (to choose). The past tense is spelled chose and the past participle is chosen. The verb "choose" is also a homophone of the verb conjugation "chews" (bites on).
Yes, "negotiable" is spelled correctly.
You have spelled 'still' correctly.
Yes, engineer is spelled correctly in your question.
Yes, surprisingly is spelled with an S. Surprisingly is how you spell it. You spelled it correctly.
You've spelled it correctly.
Convenience (easy access or availability) is correctly spelled.
Correctly: How did Elise spell? She spelled correctly.
You have audit spelled correctly. :)
it is correctly spelled iPod.
It's kindergartner, not kindergartener.
You spelled it correctly: pumpkin.
You've spelled it correctly.