Come on, ______you'll be late.A. and B. but C. or d. so
The Olympics ________ every four years. And the 29th Olympics ________ in Beijing in 2008.
I think ________ necessary ________ to take more exercise.
A football match ________ in our school next Monday.
We will spend our winter holiday in Shanghai, but we haven’t decided _______.
David visited lots of ________ in the world.