-Sandy,I called you at 9:00 last night,but nobody answered the phone.-I’m sorry. We ______ a birthday party _______ Jerry.
—It's difficult to get to the other side of the river. —I think a bridge ________ over the river.
Flowers_____ along the road last year.
Pens are used for on paper.
— Do you know in ancient China? — I have no idea. But I know people once used tree leaves to make paper.
— Michael Jackson was called the king of pop, wasn’t he? — Of course. He by people all over the world.