mean后面要加s吗例：Do you know that the red light ______(意思是)“Stop”

mean后面要加s吗例：Do you know that the red light ______(意思是)“Stop” The red traffic light ___that you must stop your car. A.mean 不解 Do you know what mean that the boy said? Do you know ______ at the bus stop? You must stop at the red light变成否定句 You must stop when the light is red 改为祈使句 you must stop at the red light,同义词转换 ( )go at a red light, What do you do when you see the red light -Do you know that kid?-you mean ____eight-year-old boy,he's What does the red light mean? Do you know the girl ___ red do you know the geirl （）red