题目

Harry visited the bookstore every week. He became such a _______ customer that the bookseller gave him some books as presents. A. common         B. normal             C. usual          D. average   答案： C   由“Harry visited the bookstore every week”可知，他是常客，含有“习惯，惯例”之意，故选C。  

查看本题答案和解析