Please don't leave the building _______ to do so.A.because asked B.if asking C.when asking D.unless asked

Please don't leave the building _______ to do so.A.because asked B.if asking C.when asking D.unless asked
Please don't leave the building _______ to do so.
A.because asked
B.if asking
C.when asking
D.unless asked

Please don't leave the building _______ to do so.A.because asked B.if asking C.when asking D.unless asked
选D,请不要离开大楼除非被告知这么做

D 除非告诉你否则不要离开大楼

D