题目内容
【题目】__________ without friends __________ the most difficult challenge for Chuck while living on the island.
A. How did he survive; were B. How he survived; were
C. How did he survive; was D. How he survived; was
【答案】D
【解析】句意:查克住在小岛上时,对他而言,如何在没有朋友的情况下生存是最困难的挑战。从句式特点看,how引导主语从句,用陈述句语序;主语从句作主语,谓语动词多用单数形式。
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