An actor can not well play the role without life experience ____ more than a dancer can make a difference without much practice.
A number of methods been used, but the number of animals still small in the forest.
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.