--Paul, I'd like to have a talk with you at tea break. -- __________ Have what with me?
--You don't look so well, Mary. What's the matter with you? --Why?___________.
China has hundreds of islands, ___________ is Taiwan Island.
You must have waited here for a long time ,___________you?
Nearly________ of the surface of our planet is covered by water.
It’s said that __________ is going to give us a lecture.