—It seems that you know Dr. John very well. —Of course, we ________ together for five years in the 1990s.
____was known to us all that Johnson had broken his promise____he would give each of us a small gift.
Things of___kind come together; people of____kind fall into___same group.
Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale.
Yesterday I had a word with the CEO of the company, ___ who used to teach at Beijing University.
In our university there are several big parks ____we students can go to enjoy the beautiful scenery.