问题补充:
单选题It____lastnight,forthegroundiswetnow.A.might not have rainedB.must have rainedC.couldn have rainedD.rained
答案:
B解析对过去的事情肯定推测应用:must have +过去分词。
时间:2021-12-26 02:06:54
单选题It____lastnight,forthegroundiswetnow.A.might not have rainedB.must have rainedC.couldn have rainedD.rained
B解析对过去的事情肯定推测应用:must have +过去分词。