--hey man you can not cross the street now you have to wait --- the traffic lights turn green ----hey man you can not cross the street now you have to wait --- the traffic lights turn green--oh sorry and thank youa\ whenb\ afterc\ untild\ while说理

--hey man you can not cross the street now you have to wait --- the traffic lights turn green ----hey man you can not cross the street now you have to wait --- the traffic lights turn green--oh sorry and thank youa\ whenb\ afterc\ untild\ while说理
--hey man you can not cross the street now you have to wait --- the traffic lights turn green --
--hey man you can not cross the street now you have to wait --- the traffic lights turn green
--oh sorry and thank you
a\ when
b\ after
c\ until
d\ while
说理由!

--hey man you can not cross the street now you have to wait --- the traffic lights turn green ----hey man you can not cross the street now you have to wait --- the traffic lights turn green--oh sorry and thank youa\ whenb\ afterc\ untild\ while说理
选C until直到
句子意思 --嘿 男孩 现在你不能穿过街道 你必须等待 直到交通指示灯变为绿色
--哦 抱歉

B，until，一直等直到灯变绿，until译为直到……为止，其它选项你可以代入翻译一下，都不对的

A项，when ，则表示当灯变绿时你必须等待。
B项，after，则表示当灯变绿之后。。。。
C项，not。。。until固定词组且符合题意
D项，灯变绿是一个瞬间的动作，而while则表示一个连续的过程。
故选C

b.after
you have to wait after the light turn green
只有not ...until 这句话中没not