Statement 1. A thumbs up or high five, accompanied with a smile, are the usual gestures used with this statement.
Statement 2. A shake of the head, sometimes accompanied with a frown, is the usual gesture used with this statement.
Statement 3. I can't recall any gestures that would go with this statement.
Statement 4. Pointing to the watch, perhaps accompanied with a questioning eyebrow.
Statement 5. The exclamation 'whoa!' actually means stop. The word would most likely be said while holding up the hands in a 'slow down' or 'wait a minute' gesture.