单选题 Many a way ______ tried already.
A. has been B. are C. being D. have

【正确答案】 A
【答案解析】[解析] many a(许多)作定语修饰单数可数名词，谓语动词用单数。例如：Many a student wants to visit the museum of Sydney．(许多学生想去参观悉尼博物馆。)故选A。