Coolly is considered correct, and cooly is also.
The correct spelling is superintendent.
(C) The word "coolly" meaning calmly, in a unexcited way. The proper spellings for the other three are : proceed, superintendent, and argument.
Of those four, only (C) "coolly" is spelled correctly.
Yes it is spelled correctly
The correct spelling of the number "14" is, indeed, "fourteen." The number "40," however, is spelled "forty."
You have spelled 'still' correctly.
No word is always spelled correctly. But the word "correctly" is correctly spelled as correctly. (see related question)
Yes, surprisingly is spelled with an S. Surprisingly is how you spell it. You spelled it correctly.