1、选修6Unit4Ⅰ.用所给的词的适当形式填空1.Manypeopledonotbelievethe________oftheghosts.Butsomeyoungchildrendoubtthatthere________allkindsofghostsintheworld.(existence)[答案] existence exist2.Whenwegotthere,the________wentoff.Thelocaltoldusthatthe________powertherewasnotenough.(electrical