He did it ______ it took me .A.one-third a time B.one-third time C.one-third the time说明原因.

问题描述:

He did it ______ it took me .
A.one-third a time B.one-third time C.one-third the time
说明原因.

C. one-third the time

答案C
意思是我做这件事情花了1份时间,但是,他只花了1/3的时间
后面的it took me是定语从句,
所以,前面必须有先行词,而且,因为定语从句,所以,
这个先行词前面必须有the,表示限定
肯定正确