It is dangerous football in the street.A. playB. to playC. playingD. played

问题补充：

It is dangerous football in the street.

A. play

B. to play

C. playing

D. played

答案：

A. play

(答案→)B. to play

C. playing

D. played

解析：固定句式It’s adj to do sth做某事怎么样。本句中it是形式主语，真正主语是to do sth，故选B。