______book is _______ the floor.A、A; on B、A; under C、The; on
Customs change from country to country. Some customs in China are quite different fromin Western countries.
—Excuse me, Liu Ming. Could you tell me what a UFO is like? —Sorry. Perhaps really knows whether there is a UFO in the world.
New Year’s Eve, there are lots of celebrations around the world.
A lot of good teachers ____ their students .
--Where is Tom? --He ____ in the big room.