How beautifully she sings! I have never heard＿＿＿. 

The girl looked at me with a________expression. Maybe the problem was quite________.

However ________, the native people do have something in common.

Mistakes don’t just happen, but they occur for a reason. What we ought to do is find out the reason and then making the mistakes _____________.

Though my grandfather is in his eighties, he is still as _________ as a young man and hates sitting around doing nothing all day.