.Mr Wang has an idea about our school trip. It sounds_________. We want to try.
— TV was invented in _________ century.— Is that true?
—When _________ personal computers _____________?—In 1976.
—Must I finish my work today?—No, you ____________. You _____________ finish it tomorrow.
I think the Great Wall is _________ unusual wonder in the world.
--- Thanks for offering us so many useful materials.--- _________________________。.