I suppose they must be trying out new ideas in the lab的反义疑问句为什么是need not they?

问题描述:

I suppose they must be trying out new ideas in the lab的反义疑问句为什么是need not they?

首先I suppose等句子反义的是后面的从句,must反义用need,具体原因不清楚记着就行啦I suppose等句子反义的是后面的从句,这个理解,后面的从句中含must not,那就应该看后面的be动词啊?为什么答案不是are not they?从句没有must not啊从句是肯定语气啊!然后四个选项中有一个选项是must not they ?应该不是它吧!