Nothing serious ever happened,反义疑问句这句话后面应该跟什么?是did it 还是does

Nothing serious ever happened,反义疑问句这句话后面应该跟什么?是did it 还是does 反义疑问句it's nothing serious ,is it 还是it's nothing serious,isn' stand up反义疑问句后面跟什么 是will you?还是won't you?为什么? nothing ever happened什么意思 反义疑问句回答---It's nothing serious,________,doctor?---________,I nothing he did right的反义疑问句 Nothing happened on the first day.________?（反义疑问句） nothing在反义疑问句中是充当肯定还是否定? nothing 在反义疑问句中 是看做单数 还是复数 反义疑问句主语是someone,后面的主语应该用什么? 反义疑问句中,前面有nothing了,后面是否定还是肯定? dislike 反义疑问句 后面用 does 还是 doesn't dislike .or.还是and