--Who is knocking at the door?-It ______ be Mr. Wang. He always knocks at the door so loudly.
— What is Mom cooking in the kitchen? — Fish, I guess. How nice it _______!
The young girl couldn't afford a new car. ______, she bought a used one.
—I don’t know which skirt was ______, so I took them both. —Yes, it’s really difficult to choose.
— My cousin often has nothing for breakfast, ______ she? — ______. Because she often gets up late and is afraid of being late for school.
— When did Prince William and Kate get married? — They ______ for about two years.