必须把灯关了英文

1. ought to shut off

关灯

Turn off the lights

造句：

Be/Make sure to turn off all the lights when you leave!或：Turn off all the lights by all means when you leave!

Please turn off the light when you leave the office.

You must turn off the lights when you leaves the office.

please be sure that all the lights can be turned off before you leave。