【简答题】Though he was very excited about being elected as the president of the student association, many extra responsibilities have been _______________________ him ever since then. 2. The doctor, having no ...
【简答题】Xin went to the library to borrow a book entitled Organic Chemistry, but she couldn't find it. She 1. ________ to the library desk for help. The librarian searched the 2. ________ and found that the b...