if和when的区别在_____ the traffic lights turn green,you can go ac

if和when的区别在_____ the traffic lights turn green,you can go ac You can go ____(cross) the street when the traffic lights ty the traffic lights are green.we can[ ] Go along this a____ and turn left at the traffic lights,you traffic.the.you.left.at.lights.turn 组句 () the traffic lights turn red ,you must stop. You turn left at the traffic lights 汉译是什么? Remember _____ (turn) off the lights when you leave the clas Turn off the lights or the radio when you have to go out at Turn off the lights or the radiao when you have to go out at Don't cross the street ____ the traffic lights turn green.用u Remenber to turn off the lights when you go to bed另一种英语怎么解释?