@Mo Cuibin Well, if they were truly friends, then they would pay you back as soon as they could.

@Mo Cuibin Strangers, you wouldn't give them the chance to let you down.

@Joy Hu We help you find the correct way, it's up to you to practice.

@Joy Hu bu ke qi

You all done a good job and Coach was very patient with repeating the sounds for you. Great Job!

We aren't advanced enough yet, if we did it would be too soon.

@Amal Ta Firstly, we need to save this planet and not destroy it, once we are able to live here without killing anything or destroying it. Then we would be ready and be more self-conscience of what we do. Secondly, there are other planets very similar to earth and Astronomers have found a concealed super-Earth in the habitable zone of a distant Sun-like star, using a groundbreaking detection technique. The discovery could reshape the hunt for life beyond our planet.

@Vincent Yeung Still nothing! but thank you for trying.

@Vincent Yeung I have far too many videos myself