高中英语问题
1.______tosunlightfortoomuchtimewildoharmtoone'sskin
A.ExposedB.HavingexposedC.Beingexposed
2.Youshouldtrytogetagoodnight'ssleep____muchworkyouhavetodo
A.howeverB.nomatterC.althoughD.whatever
3.___foralongtime,butheinsistedonwritingthewall
A.HavingbeenillB.AlthoughbeingillC.HebeingillD.Hewasill
解释一下