--- Can you lend me the book Gone with the Wind? --- Sorry, I returned it to the library just now. Maybe it is still ____.
Mr. Wang has been selected_________ chairman of the conference.
Paper-making began in China and from here it ________ to North Africa and Europe.
He wrote this article ____this great communist fighter, Dr. Bethune.
As a result of the heavy fog, the highway has been closed up until further _______ .
It was pouring . All the machines stood _____ in the open air. A. uncover B. to be uncovered C. uncovered D uncovering