题目

Each of the 400 people received from their boss ______ gift － “Who moved my cheese?” , ______ best-seller in the US, which helped them understand how to deal with changes in their lives and work. A. the; /         B. a; /     C. a; a     D. the; a 答案： C补全句子，用所给词的适当形式填空 They have __________ (be) friends for many years.