Can you tell the ________ difference between the words “require” and “request”? I sometimes get puzzled by their meanings.
Leaders from different parts of the world took part in the discussionthe international treaty.
Du Vigneaud , a well-known American scientist,the Nobel Prize chemistry in 1955.
By the time hethe railway station ,the train.
—Where is Mr Smith? —Hein prison for more than two months.
1. —Haven’t you heard the news? —What news? —Some of the workers are onmarch while others onstrike.