because the Johnsons couldn't have children, they adopted an orphan(孤儿)

assist vt. 辅助(同义词： aid, help)

a nurse assisted the surgeon during the operation. surgeon(外科医生，军医)

beneficial adj. 有益的(同义词： profitable, lucrative)

Mary's college classes were beneficial to her career path.

bestow vt. 增予 be+stow(地方) 给予地方，赠予

champion vt. 支持(support)

Bill championed the party's nominee for president (nominee 被提名者，候选人)