Bod____(not be)hoppy._____(he)book is lost 用适当形式填空

Bod is not happy.His book is lost

isn't;His

is not/isn’t
his

isn't his
第一空,用isn't ,因为Bod,在这个句子中是单数第三人称...而且为否定..

第二空，用his ,因为这个用来修饰book,所以用his ,意思为 "他的"。