— Tom speaks Chinese very well. Who teaches him?— He studies by .A. heB. himC. himself D.

问题补充：

— Tom speaks Chinese very well. Who teaches him?

— He studies by .

A. he

B. him

C. himself

D. his

答案：

A. he

B. him

(答案→)C. himself

D. his

解析：study by oneself 自学