—He got his first book published.It turned out to be a bestseller. —When was_______? —__________was in 2000 when he was still in college.
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