(2013·福建泉州七中模拟)Whatever background you come from, you can be ________ successful with your hard work like many others.

He was down with the flu, and ____ couldn’t come to the party.

Medicine depends on other fields for basic information, particularly some of their specialized branches.

He began to take political science ____ only when he leftschool.

Men are equally as good as women at taking care of others; better ______, male nurses can be a great help in keeping patients still while they receive painful treatment.