---Have they finished ________ the Water Festival? ---No, they haven’t.
—Let’s go and______ hello to Mr. Clark.—OK, let’s go.
—Is that an eraser?—___________.
—______ your father have an uncle ?—Yes, he does.
I wonder __________.
— Michael Jackson was called the king of pop, wasn’t he? — Of course. He by people all over the world.