No one helped me. I did it all myself.A. forB. byC. fromD. 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：句意: 没有人帮助我。我自己做的。for oneself 为自己；by oneself 独自的。根据句意故选B。