【正确答案】 Affidavit of Support
To whom it may concern,
With reference to my younger sister, Jenny Li's application for admission to your university, I wish to advise you that I have the ability and am willing to finance her education for the entire period of her stay in the United States.
In my capacity as her financial sponsor, I shall provide her the minimum amount of $ 30,000 for her tuition, fees, and living expenses per year. Evidence of my financial resources in the form of a bank statement accompanies this Affidavit of Support. However, these resources are only of the assets at my disposal.
Sincerely yours,
Li Ming

【答案解析】这是一则担保声明书，正式。担保声明书一般用于出国留学或探亲的经济担保。第一段说明要担保谁，此人出国目的；并表示愿意支付此人在国外期间的费用。第二段提供自己的财力证明。