A good comment . . .
is simple, clear, and brief. In most cases, it can be given in 30 seconds or less
is best given in your own words
is not a needless repetition of a previous comment
If you are called on first, . . .
give a simple, direct answer to the question
If the question has been answered, you could . . .
show how a cited scripture bears on the point under consideration
mention how the matter affects our lives
explain how the information can be used
briefly relate an experience that highlights a key point