Use a more convincing phrase. something that reflects a clear opinion on your part. This sentence is confusing because at the end you said:
but it's at all.
Did you mean to say that you are certain about your opinion? Or, not? The task score is reliant on the way that you deliver your opinion with a sense of belief and proper support for your supported opinion. The lack of opinion clarity is what creates a problem in your prompt restatement + opinion presentation.
Why do Vietnamese students consistently insist on using a comma and ellipses simultaneously? This is the most common and irritating grammar and punctuation usage error of these students collectively. It is also the most common GRA scoredown cause that examiners apply. You are all being taught improper punctuation usage in the English language by your schools. Use one punctuation mark at a time. That is the unbreakable English punctuation rule. One at atime, never successively. The sentence loses all logic in terms of idea presentation, emotions, and thought clarity. The reader never knows what a Vietnamese student is trying to say when these successive punctuation marks are used. This is a GRA fail.
for development of human.
Human what? The thought presentation is incomplete. Learn to think and write in English, with a proper subject - verb agreement at all times.
Did you mean, "In conclusion"? The student has serious grammar and vocabulary problems that will definitely cause him to fail the test.