--- How about your school trip to Dalian?--- Everything was wonderful except that our bus _____ twice on the way.A.turned downB.broke downC.gave upD.dropped by
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B解析此题重点考查四个短语的含义，turn down表示关小，break down表示坏了，give up表示放弃，drop by表示顺便拜访，根据语境只有C符合句意故选C.