to finish this composition in such a short time is a mystery.A. How did he manageB. What

问题补充：

to finish this composition in such a short time is a mystery.

A. How did he manage

B. What did he manage

C. How he managed

D. What he managed

答案：

A. How did he manage

B. What did he manage

(答案→)C. How he managed

D. What he managed

解析：考查主语从句，句意：他是怎么设法在这么短的时间完成作文的是个迷。所以是how连接主语从句，而且主语从句的语序应该是陈述句语序。选C。