No one was sure how long the snow _______ (last) at that moment. All they could do was to wait.
问题描述：
No one was sure how long the snow _______ (last) at that moment. All they could do was to wait.
答
would last 此句是由how long 引导的从句前面用was 是过去式,又由于at that moment为将来时所以用过去将来时态.我的回答希望能帮到忙,