The policeman told us the street when the traffic light was red.A. not crossB. didn’t cros

问题补充：

The policeman told us the street when the traffic light was red.

A. not cross

B. didn’t cross

C. not to cross

D. not crossing

答案：

A. not cross

B. didn’t cross

(答案→)C. not to cross

D. not crossing

解析：句意：警察告诉我们当红灯亮时，不要横穿马路。Tell后面一般接不带to的动词不定式做宾语补足语，其否定表达一般是在不定式符号to的前面加not，选C。