Question

no A and no B 做主语,谓语动词用单数还是复数?

Answer 1

and所连接的连个名词前分别有: every, each, no, many a等修饰时，谓语动词用第三人称单数形式。如：
(1) Every boy and every girl enjoys themselves in the school.在学校，每一个男孩和女孩都玩得挺开心。
(2) Many a teacher and many a student has spoken at the meeting.在会上，很多老师和学生发了言。

Answer 2

　　用单数

Answer 3

你这是no 还是打错了得No. 这是关键。