1.By the time you arrive in London we _____ in Europe for two weeks.考什么?

问题描述:

1.By the time you arrive in London we _____ in Europe for two weeks.
考什么?

By the time you arrive in London we will have been__ in Europe for two weeks.
【by+将来的一段时间+将来完成时】固定用法
有不会的可以再问我