After his right arm he keep on with his left arm.A. lose; writeB. losing; writingC. los

问题补充：

After his right arm, he keep on with his left arm.

A. lose; write

B. losing; writing

C. losing; write

D. lose; writing

答案：

A. lose; write

(答案→)B. losing; writing

C. losing; write

D. lose; writing

解析：句意：他失去了他的右胳膊之后，他继续用左胳膊鞋子。介词after之后接名词，代词或动名词doing做宾语，故排除AD两项；介词on后的宾语用动名词doing，故选B。