3.3He didn't know whether she is going to speak at the meeting.is_英语解答

3.3He didn't know whether she is going to speak at the meeting.
is错了应该改为为什么

人气：193 ℃　时间：2019-10-02 20:43:32

解答

is应该改成was
主句是过去式,所以从句也要用过去式