– James didn’t ____ last night, did he?– No. He ____. We had changed our plan.

— Jack, take more clothes when going camping. It ______ be very cold in the mountains.— Thank you, Mum. I will.

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

--- Are you coming to Jeff’s party? --- I’m not sure. I _______ go to the concert instead

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