Since the opening and reform policy, China    a boom in its economy.

---Oh, it’s you! I ______ you.--- I’ve just had my hair cut.

Turn on the television or open a magazine and you ________ advertisements showing happy families.

The wireless video camera is ________to send its video signal to a nearby base station，allowing it to be viewed on a computer or a television．

When winter comes, it _________ become very cold in Shenyang.