【单选题】As the plane circled over the airport,everyone sensed that something was wrong. The plane was moving unsteadily through the air,and although the passengers had (11) their seat belts,they were suddenly...
【单选题】As the plane circled over the airport, everyone sensed that something was wrong. The plane was moving unsteadily through the air, and【31】the passengers had fastened their seat belts, they were suddenl...