when you leave the room,make sure( ) the lights are turned off.正确答案为：that,但是为啥不能选填“whether”,意思上不也是讲的通的吗?

R（ ）to turn off the light when you leave the classroom. When you leave the room(r )to tum off the lights Please r（ ） to turn off the lights when you leave.首字母填单词.急用~ 锁the door when you leave,英语 You should l_______ the door when you leave the house. please turn off the light when you leave._ _the light on when you leave. R………to clean the windows when you leave.怎么填?根据首字母提示,完成下列单词. when you leave the kitchen,().A.you should leave the stove on B.you shouldn't leave the stove on When did you leave? ( )( ) the light when you leave the room,please when you leave ,please t____o____.the lights in the classroom Please l_____ the door when you leave the classroom . ___(shut)the door when you leave the house Please remenber_(turn)off the light when you leave. don't forget(ciose)the door when you (leave) Don't forget ____(close) the door when you leave Please remember _____(close) the doors when you leave. turn off the light when you leave,________ ______