--What will you do during winter vacation? --I don’t know, but it’s about time ____ something. A I’m deciding B I’ll decide C I’d decided D I decided
This new-type machine____________ little room.
--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.