第一节：单项填空（共15小题，每小题1分，满分15分）
It was ______ middle of _____ winter, and ______ snow lay thick on the ground.
A. the; the; the B. the; /; / C. /; the; the D. the; /, the
22. “I don't think it's my_____ that the TV blew up. I just turned it on, that's all,” said the boy.
A. error B. mistake C. fault D. duty
