Her father ______ in the U.S.A. for another year, so that she could work toward her master's degree.A.agreed her to stayB.permitted her stayC.let her stayingD.approved of her staying
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D解析句意：父亲同意她在美国再呆一年，为的是她能攻读硕士学位。本题考查非谓语动词作宾语。前三个选项中短语结构不正确，正确形式应为：permit sb. to do/let sb. do，没有agree sb. to do结构；approve of sth./sb.赞成，同意，批准。