题目内容
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
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题目内容
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