No one helped me . I did it all myself A. for B. by C. from D. to

问题补充：

No one helped me . I did it all myself

A. for

B. by

C. from

D. to

答案：

A. for

(答案→)B. by

C. from

D. to

解析：(all) by oneself=without help意为“单独地，靠自己”；for oneself意为“为自己”；to oneself意为“自私的；为…所单独有的”。