第1个回答 2015-02-02
I'm sure I turn off the light.
第2个回答 2015-02-06
I make sure / am sure that I have turned off the light.
I make sure / am sure of turning off the light.本回答被网友采纳
第3个回答 2015-02-02
I pretty sure i close the light.
第4个回答 2015-02-02
I can make sure that I have turned off the light.