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麻烦老师解答:1.Everyoneissuppos1.Everyoneissupposedaseatbeltinthecar.[]A.wearingB.towearC.tobeworn

题目详情
麻烦老师解答:1.Everyone is suppos
1.Everyone is supposed ________ a seat belt in the car. [     ]
A.wearing
B.to wear
C.to be worn
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答案和解析
B