During his first trip to China, President Obama discussed some key global issues such as economic recovery, climate change, _______ nuclear weapons in his talks with Chinese President Hu Jintao.
A.and stopping to spread | B.to stop spreading |
C.to stop to spread | D.and stopping the spread of |
Paper-making began in China and from here it ________ to North Africa and Europe.
A.spread | B.grow | C.carried | D.developed |
He wrote this article ____this great communist fighter, Dr. Bethune.
A.in honor for | B.in return for | C.to honor of | D.in memory of |
As a result of the heavy fog, the highway has been closed up until further _______ .
A.news | B.information | C.notice | D.message |
It was pouring . All the machines stood _____ in the open air.
A. uncover B. to be uncovered C. uncovered D uncovering
They were surprised that a child worked out the problem _____ they themselves couldn’t.
A.once | B.then | C.if | D.while |