they had to walk there,hadn't they?怎么改 he had better stay here,doesn't he?怎么改
问题描述:
they had to walk there,hadn't they?怎么改 he had better stay here,doesn't he?怎么改
答
hadn't they 改成 didn't they
doesn't he 改成 hadn't he
答
第一个改为didn't they?
第二个改为hadn't he?
答
They had to walk there,didn't they?
He had better stay here,isn't it?