________ theme of the Shanghai Expo is “Better city, better life”. It will send _____ message to people around the world to care about the places where they live.
_____ to sunlight for too much time will do harm to one's skin.
The discovery of new evidence led to _________.
Not only_______give us relaxation and pleasure,but also_____increase our knowledge.
Not until Jane got off the bus_______her wallet missing.
We all feel it is Jack as well as his wife that_______for their son’s bad performance at school.