问题补充:
with his graduation design, he has been working in the library for a week.
A. Having occupied
B. Occupying
CBeing occupied
D. Occupied
答案:
A. Having occupied
B. Occupying
C. Being occupied
(答案→)D. Occupied
解析:考查非谓语动词。be occupied with 忙于某事,Occupied with 在句中作状语。句意:忙于他的专业设计,他在图书馆工作了一周。所以选D。