Adriverisaskedtokeephissafety

发布时间：2020-07-28 00:30:04

A driver is asked to keep his safety-belt _________ while driving on the freeway.A.fastenB.fasteningC.fastenedD.to fasten

网友回答

C解析考查非谓语动词。句意：司机在高速公路上行驶时应系好安全带。safety-belt与fasten之间是被动关系。
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