他们得逐一去见校长 They had to go to see the headmaster one ___ ___ ____英语解答

他们得逐一去见校长 They had to go to see the headmaster one ___ ___ ___

人气：327 ℃　时间：2020-04-17 05:56:28

解答

at a time 每次
不懂追问!