--- Is your mother’s father your _______? ---Yes, he is. A. aunt B. uncle C. grandfather
—Excuse me, is there a post office near here? — _______ I can’t hear clearly.
The policeman asked the driver _______.
—Let’s read the report on India’s population in the newspaper. —Wow! ______________ large the population is !
—Joan’s been to Beijing . What about Jack ? —_______
—Hey, Jack. Waste paper mustn’t ________ here. —Sorry, I won’t do that again.