The man ______ be my father. My father is much taller.

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

Mr. Baker, a number of students want to see you. _______ they wait here or outside?

 —Must the government of Philippines (菲律宾政府) say sorry to China？—Yes, they __________. Their behaviour has deeply hurt Chinese people.

 ----You needn’t take an umbrella. It isn’t going to rain.----Well, I don’t know. It_____do.