If you often go to a gallery, it ______ well change forever the way you look at art.

— Can I pay the bill by check? — Sorry, sir. But it's the management rules of our hotel that payment ______be made in cash.

–When can I get the result of the test, sir?–You ____ have it next Friday.

He____know the answer, but I’m not sure.

 —Why are you late again?—Something happened to our friend Wang Fei. I _____ to help him.