We must ____(switch on/switch off)the lights before we leave the classroom.

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• We must ____(switch on/switch off)the lights before we leave the classroom.
• （英完成句子）离开课室时请关灯.Please_______ ________ the lights when you leave the classroom.我看到答案是 turn off 请问switch off
• Mr Green told us ____________ turn the lights off when we leave the classroom.
• We must ____(switch on/switch off)the lights before we leave the classroom.
• 用连词if,when,after,before填空.1._____ I came to the check-out,I realized that I had no money with me.2.We will go to the Summer Palace _____it doesn't rain.3.I wonder _____ I should wear a hat.4.I found your coat _____ you left the house.5._____you helped me with my English,I wouldn't have faild the exam.6.He always puts the interests of others _____ his own.He is very kind.7.Turn off the switch _____something goes wrong with the machine.8.It will be a lo
• 英语 动名词,只加ing?用动名词形式填空1.It is no use______(ask) her about it.2.She couldn't help_____(smile) at the words.3.Soon he gave up_____(teach) and joined the army.4.Mr.Li denied_____(see) the camera before.5.He went on_____(do) the experiment that right.6.Her job is______(make) paper flowers.7.______(read) materials should be interesting.8.We can improve our English only by______(work) hard at it.9.Before______(leave) the room,you should turn off the lights.1
• The girl is proud that her family is well descended.
• 保证出力 这西词语 并用列子解释