SWITCHES / TURN OFF / LEAVE / WORKSHOP A. ALL THE SWITCHES MUST BE...

80. switches / turn off / leave / workshop A. All the switches must be turned off before your leaving the workshop. B. All the switches is to be turned off before we leave the workshop. C. All the switches have got to be turn off before leaving the workshop. D. We should be turned off all the switches before we leave the workshop. _____ The end _____