Nicely
“How do you feel this morning?” “Nicely, thank you.” The foregoing use of the word is as incorrect as it is common. Use very well instead.
No good, No use
“How does that new machine work?” “It’s no good.” “Shall I try again?” “No; it’s no use.” The answers should have been, “It is of no good, it is of no use.”
While good usage is far from uniform, many excellent authors employ O only in cases of direct address and oh when strong and sudden emotion is to be expressed. O is always written with a capital letter, and should be followed by the name of the person or thing addressed, and the exclamation or interrogation point placed at the end of the sentence; as, “O Death, where is thy sting? O Grave, where is thy victory?” “O the cold and cruel winter!”
Oh in the body of a sentence may begin with a small letter, and is immediately followed by the exclamation point; as, “Oh! how terrible was his fate!” “The sad intelligence was gently given, but oh! the shock was almost unbearable.”
Observe, Say
“He observed that the orphan pines while the oppressor feeds.” To observe is to notice carefully, to attend closely to what one sees. In the above sentence said or remarked should be used instead of observed.
Of any, Of all