The ground is wet ,so it must have rained last night,( A hasn‘t it B didn’t it C mustn‘t it D doesn’t it
问题描述:
The ground is wet ,so it must have rained last night,(
A hasn‘t it B didn’t it C mustn‘t it D doesn’t it
答
此处由于有明显的时间点,应当用didn't it?
答
虚拟语气,选B