No one helped me . I did it all myself . A. for B. byC. 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

B. by

C. from

D. to

解析：考查介词与代词的搭配构成的短语的辨析。for oneself亲自；by oneself单独，独立；to oneself独占, 独用;from oneself从自己。根据句意应选B，我自己能做它。