单选题 If I keep this oath faithfully, may I enjoy my life and practice my art, ______ by all men and in all times; but if I swerve from it or violate it, may the reverse be my lot.
【正确答案】 A
【答案解析】[解析] 该句中enjoy为谓语动词，后面接动词ing形式。因此，被动态的be动词变成being形式。由空白处后面的by可推测，前面应该是被动态，故排除B和C选项。因此，A项为正确选项。