__________ environmental damage is done, it takes many years for the ecosystem(生态系统) to recover.
When people talk about the cities of China, the first ____comes into their mind is Beijing.
The government _____ to the country to pay more attention to A/H1N1flu
____ the end of the performance did the audience get the chance to take photos with the respectable actor.
The media today can draw public attention to _______help is actually needed.
It is obvious that talking about something behind others is what everyone will not ______.