—Can I pay the bill by check?     —Sorry, sir. But it is the management rules of hotel that payment _____ be made in cash.

--- It’s so late. Our son______ be back!--- Don’t worry. I dare say he ______ have some extra work to do.

——TV and computer are so popular these days.——Yes, they can ____ our eyes to the outside world.

---Look at that girl! Is that Susan?---No , it _______ be her. She has gone back to her hometown.

Now people like to write articles------computers not--------paper.