I hear one of the koalas -------- a baby .A.there`s B.there are C.haveD.
问题描述：
I hear one of the koalas -------- a baby .A.there`s B.there are C.haveD.
答
I hear one of the koalas ----D---- a baby 。A. there`s B.there are C.have.D has
答
one of +复数名词做主语,谓语动词为单数.故选D.has