【答案】It is an interesting story and one can’t put

题目：
It is an interesting story and one can't put it down _____ one has finished reading it. A. after B. when C. since D. until

答案：

D

解析：

考查固定句型. Not…until…直到…才…句意;这是一个有趣的故事，直到完全读完以后才能真正理解它的意思。