a free release **rmation platforman engl**h-language website that provides a comprehensive range of services and **rmation for both international v**itors and china-based expats.in the future please c...
2,b解释:由题意明显知we will be back 是未来的事,in+一段时间表将来意思是在三周内a选项的after不常用于这种表述方法。after更常用于过去时中表两个动作的先后顺序。如:i came home after i had fin**hed my homeworkc,for+一段时间是完成时的标志语(只能死记了)d,只能是3 weeks later