is dangerous play football in the street.A. It toB. It forC. Its toD. Its of

问题补充：

is dangerous play football in the street.

A. It , to

B. It , for

C. Its , to

D. Its , of

答案：

(答案→)A. It , to

B. It , for

C. Its , to

D. Its , of

解析：考查固定句型。It is +adj. (for sb.) to do sth.“做某事对某人来说怎么样。”其中，it是形式主语，真正的主语是动词不定式，为了避免头重脚轻，而往往把不定式放在句尾，用it作主语。句意“在大街上踢足球是很危险的。”故选A。