题目

—Tom took away our teacher’s cell phone without being permitted. — Really? I can’t imagine that he __________ have done such a thing. A.must        B.may        C.should           D.can 答案:C在抗震救灾中,解放军某部抢修一段长45千米的公路,第1小时修了这段公路的25,第2小时修了这段公路的13,剩下的第3小时修完,第3小时修了这段路的几分之几?
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