Considering his poor health condition, the doctor insisted on his a good rest before going back to work.
A. being taken
B. having taken
C. his taken
D. his taking
网友回答
A. being taken
B. having taken
C. his taken
(答案→)D. his taking
解析：考查短语:insist on doing 坚持做某事，doing前可以跟形容词性物主代词，句意：考虑到他的身体健康不好，医生坚持他好好休息在回去上班之前。所以选D。