题目内容:
Ladies and gentlemen, please remain __________ until the plane has come to a complete stop.
A. seated B. seating C. to seat D. seat
参考答案:【答案仅供学习,请勿对照自行用药等】
Ladies and gentlemen, please remain __________ until the plane has come to a complete stop.
A. seated B. seating C. to seat D. seat