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。