阅读短文，从方框中选出适当的词，并用其适当形式填空。有的需要加助动词或不定式符号。(每词限用一次)
Many people have heard of Barack Obama—the first African-American president. While Obama （1） in high school, he showed much talent in study. After graduating from university, he worked as a teacher. And he (2) some books since 1995. These books help him earn millions of dollars. He gives away some of the money to charities. He (3) the President of the USA in the year 2008.
Most of the American people (4) confidence in Obama. They believe that a bright future (5) to them soon.was studying
网友回答
(答案→)was studying
解析：
【小题1】考查时间状语从句。While引导的从句用进行时，根据句意可知，用过去的时态。故填was studying。
【小题2】考查时态。since+时间点，与现在完成时连用。故填has written。
【小题3】考查动词和时态。根据in the year 2008可知，用一般过去时。bee“成为”。故填became。
【小题4】考查固定短语。have confidence in sb.“对某人有信心”。故填have。
【小题5】考查时态和被动语态。根据soon可知，用将来时。主语a bright future是物，应该用被动语态。bring sth. to sb.“把......带给某人”。故填will be brought。