问题补充：
The winter holiday, when I am looking forward to, is coming. What fun it is to have sports! Play football is one of my hobby. I can also ride my bicycle, climb high mountains, or go skating. Sometime I can play the chess with Grandfather. How interested my holiday will be! But my father is always afraid I would be hurt by a truck, fall into water, and fall off a tree. He is afraid I would fight against others or taken away by bad men. But if I’m friendly and carefully enough, how will these things happen? I must try best to persuade my father.when—which
答案：
(答案→)when—which
解析：
【小题1】when—which，考查定语从句：先行词是The winter holiday,但是定语从句中缺少宾语，用which引导非限制性定语从句。
【小题2】Play—Playing，考查动名词做主语
【小题3】hobby—hobbies，one of后面接可数名词复数
【小题4】Sometime是某个时间，sometimes是有时
【小题5】去掉the，play chess下象棋，中间不加冠词
【小题6】interested一般修饰人，这里修饰holiday用interesting修饰
【小题7】and---or，这是选择的关系，被卡车伤到，掉到河里或者从树上掉下
【小题8】or后加be，考查被动语态，I和take away是被动关系
【小题9】carefully—careful，和friendly并列，用形容词careful
【小题10】 try 后加my，try one’s best尽某人最大的努力
