问题补充:
单选题Twofifthsofthepolice_____intheschoolnearthetown.A.has trainedB.have trainedC.has been trainedD.have been trained
答案:
D
时间:2021-01-20 23:21:37
单选题Twofifthsofthepolice_____intheschoolnearthetown.A.has trainedB.have trainedC.has been trainedD.have been trained
D