问一英语单选

来源：百度知道 编辑：UC知道 时间：2024/06/25 04:26:46
A: Hi, Robbie! You must be very excited about your trip to Europe. _____ you are leaving?
B: In just three weeks.

A. when is it that B. How soon is it that

正确答案是A, 请问选B行吗?为什么?

when什么时候？
when will you be back？
in 3 days。

how long 多长时间
how long does it take for going home？
3 hours

how soon 多快
how soon can I take my card back？
in 3 days（这种情况也可以用when！）