Hi, I've found many people say things like: "I did the test pretty well. I will be very happy if it's highly graded. Hope that." Is it fine to say this way? (It should have been "I hope that"). Do native English speakers sometimes say this way? And in the "Eyes on me" song, it starts with: "Whenever sang my song, on that stage, on my own..." The subject should have been I but it was omitted. If possible, when can we omit the subject like this?