【单选题】Though he was very excited about being elected as president of the student association, many extra responsibilities have been _____ him ever since then.
【简答题】阅读理解 George Stephenson was born in 1781 in a poor family. He had to start work when he was only eight. When George was four, he became his father’s helper. He spent a lot of time learning about en...
【单选题】Though he was very excited about being elected as the president of the student association, many extra responsibilities have been _______________him ever since then.