– I thought I asked you to fix the radio. -- Oh, I’m sorry, Madam. I _____ it right away.
--You don't look so well, Mary. What's the matter with you? --Why?___________.
China has hundreds of islands, ___________ is Taiwan Island.
Be quiet!Our teacher has _________ to tell us.
Nearly________ of the surface of our planet is covered by water.
It's said that __________ is going to give us a lecture.