29.The patient who had suffered from H1N1 insisted on_____________from others immediately, holding the belief that the disease would infect others.
If ,the experiment will be successful.
such heavy pollution already, It may now be too late to clean up the river.
The spokesman didn’t make clear why the president failed to attend the conference.
One may never know the of knowledge without being educated.
This is the first time we a film in the cinema together as a family I mention it I feel very happy.