The university estimates that living expenses for international students ______ around $8,450 a year, which ______ a burden for some of them.A.are;areB.is;areC.is;isD.are;is
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D解析试题分析:考查主谓一致,建议:这个大学估计国际生的生活费用是每年8,450美元,这对他们一些人来说是沉重的负担。第一空前面的主语是living expenses,所以谓语是复数,第二空的先行词是$8,450 a year,表示金钱,时间长度等,谓语是单数,选D。
考点:考查主谓一致