Dina,  ______  for months to find a job as a waitress, finally took a position at a local advertising agency.[ ]

A. struggling      

B struggled      

C. having struggled        

D. to struggle

根据保险法规定，在保险事故发生时被保险人对保险标的必须具有保险利益的险种是（）

A.海上货物运输保险

B.人寿保险

C.健康保险

D.人身意外伤害保险