作业帮threetimes
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/06 19:53:01
To finish the task,we've tired threetimes,and afte
Tofinishthetask,we'vetiredthreetimes,andafterdinnerwe'lltry()time.括号里填afourth,为什么不是thefourth?两者有什么区别?afourth序数词前加不定冠词带有“