We're safer in a train than we would be if we any other way. [ ] A.travelB.had t
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![We're safer in a train than we would be if we any other way. [ ] A.travelB.had t](/pic/43_986676.jpg)
We're safer in a train than we would be if we ________ any other way.
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A.travelB.had traveledC.travelledD.have travelled试题答案
答案:C