with her graduation paper, Mary has no time to do a part—time job.
A. Having been occupying
B. Having occupied
C. To be occupied
D. Being occupied
网友回答
A. Having been occupying
B. Having occupied
C. To be occupied
(答案→)D. Being occupied
解析：考查非谓语动词做状语的区别。A项having been doing表示过去做持续到现在还未结束；B项表示发生的动作在has 之前就完成了，但occupied是跟系动词be连用表示状态，“忙于某事”的意思，排除；C项是不定式的被动式表示未发生的将来的动作；下文讲到“玛丽没有时间做业余工作”，前面应该是正忙于她的毕业论文，且这一动作做状语表示的动作与后面主句的主语Mary之间是主动关系，故D正确。