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Delta, the American airline, is sometimes jokingly explained “Don’t expect your luggage to arrive” because it ______ be very slow.
A.shouldB.mustC.canD.will
C

试题分析:句意,德尔塔,美国的航线,有时被开玩笑的打趣,“不要期待你的行李到达了。”因为它可能会很慢。should 意为“应该” ,可表示劝告、建议、义务、责任等;must表示有把握的推测,用于肯定句;表示推测,意为“可能”;will表示意愿、意志、打算,可用于多种人称,根据题意,故选C。
点评:情态动词有具体的词义,但也同助动词一样,需要与其他词语一起构成句子的谓语,另外情态动词没有人称和数的变化,情态动词后必须跟动词原形。
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