Hello!I__you___in Tokyo.How long have you been here?A.don't known; were B.hadn't known;areC.have't known;are D.didn'know;were为什么选D?为什么第二空格是were不是are

问题描述:

Hello!I__you___in Tokyo.How long have you been here?
A.don't known; were B.hadn't known;are
C.have't known;are D.didn'know;were
为什么选D?为什么第二空格是were不是are

这句话这么理解.我就在刚刚(过去时)才知道你前段时间在东京(在东京一事还是过去).