问题补充:
单选题Iamtired.I______allday.A.am workingB.have been workingC.workedD.have been worked
答案:
B解析本题句意“我很累。我一直在工作。”all day说明时间的持续。
时间:2021-09-05 10:32:41
单选题Iamtired.I______allday.A.am workingB.have been workingC.workedD.have been worked
B解析本题句意“我很累。我一直在工作。”all day说明时间的持续。