题干
_______with his graduation design, he has been working in the library for a week.
A：Having occupied
B：Occupying
C： Being occupied
D：Occupied
答案(点此获取答案解析）
D
A：Having occupied
B：Occupying
C： Being occupied
D：Occupied
ABCD中，过点D作DE⊥AB于点E，点F 在边CD上，DF=BE，连接AF，BF．
