________ book named Harry Potter is ________ good friend of mine.

himself to his research on the IT technology, hesoon made a breakthrough

Have you ever heard of Langlang—Sure. He is one of ______ pianists ______ I have even seen.

It’s ____ you behave in difficulties thatshows what you are really like.

_______ the same mistake again madehis parents unhappy; ______ by his parents, he left ______ .