_________it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
—I have tried very hard to find a solution to the problem, but in vain. —Why not discuss with Frank? You see, _________.
As we all know, the English language ________ the grammar and vocabulary that people from different countries and cultures brought to Britain.
— It was cloudy yesterday. —_________ today.
It is reported that the United States uses ________ energy as the whole of Europe.
It was along the Mississippi River _________ Mark Twain spent much of his childhood.