make sure the lights are turned off.为什么不用making

make sure the lights are turned off.为什么不用making --I am leaving now --__ you turn off the lights A To make sure B Make sure C Making sure i am leaving now._____you turn off the lights A to make sure B make sure C made sure D making sure I`m leaving now.( )you turn off the lights.A To make sure B Make sure C Made sure D Making sure I`m leaving now.( )you turn off the lights.A To make sure B Make sure C Made sure D Making sure 翻译Please make sure that all the lights are turned off before you leave the classroom. I am leaving now.___you turn off the lights.答案是Make sure.为什么? --I am leaving now.--__you turn off the lights.A to make sure B make sure C made sureD making sure ( )you turn off all the lights when you leave the classroom.Ato make sure Bmake sure Cmaking sure为什么选B ( )you turn off all the lights when you leave the classroom.Ato make sure Bmake sure Cmaking sureDbeing sure选哪一个,为社么? make sure后若不加that是否可加宾语从句?卷子上有倒题是:Make sure the lights ( )when you leave the room.选项是:are tured off Make sure all the lights turn off when you leave the room.这句中Make sure all the lights turn off when you leave the room.为什么直接可以用turn off而不用被动语态? 英语翻译before 开头 before you leave the room make sure that all the lights are turned off 这个翻译对么? I'm leaving now ,_______ you turn off the lights A.To make sure B,Make sure C.making sureI'm leaving now ,_______ you turn off the lightsA.To make sure B,Make sure C.making sure这句话是祈使句吗?什么时候句首用To make sure 或making sure Make sure you turn off the lights是正确的吗?是祈使句吗?如何判别祈使句呢? Whoever leaves the room last must___that all the lights are turned off.A.be sure B.make sure C.find out D.look out ——I am leaving now.——＿＿＿you turn off the lights.A To make sure B Make sure C Made sure D Making sureD不对 我当初选D是错的 I'm leaving now._______ you turn off the lights and thecomputer.I'm leaving now._______ you turn off the lights and the computer.A.To make sure B.Make sure C.Made sure D.Making sure应该选什么?原因是什么?