Its very dangerous football in the street.A. playB. PlayingC. playedD. to play

问题补充：

Its very dangerous football in the street.

A. play

B. Playing

C. played

D. to play

答案：

A. play

B. Playing

C. played

(答案→)D. to play

解析：句意：在大街上踢足球非常危险。强调句式， It is adj to do sth，做某事怎么样。本句中it是形式主语，指代后面不定式内容做形式主语，不定式表示具体的将要进行的动作，故选D。