题目内容
【题目】Everyone ____ supposed ____ a seat-belt (安全带)in the car to keep safe.
A. is; wearing B. is; to wear C. are; wearing D. are; to wear
【答案】B
【解析】
句意:每个人为了保持安全,应该在车里系上安全带。be supposed to do sth应该做某事,此处主语everyone是第三人称单数,故be动词用第三人称单数is,第二空用to wear,故选B。
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