According to some theories from psychoanalysis, life is supposedly easier; and more pleasant when anxiety is overe.
A. obtain
B. obtaining
C. to obtain
D. obtained
网友回答
A. obtain
B. obtaining
C. to obtain
(答案→)D. obtained
解析：本题考查的是非谓语动词，由于逻辑主语theories与动词obtain是被动关系，故选择表示被动含义的D（-ed分词）