When you are reading,make a note of ________ you think is of great importance.
--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.
We had ___________ wonderful time_________the party_______ other day.