第一题A
and连接的两个或两个以上单数名词前若用each,every,no修饰,该名词短语作主语时,谓语动词用单数形式.例如:
No book and no pen is found in the schoolbag.书包里没有书和钢笔.
第二题A
不定代词one,every,each,everybody,everyone,one of,no one,nothing,nobody,none,someone,somebody,either,neither,many a 等作主语或是修饰主语时应看作单数,谓语动词用单数.例如:Neither of my sisters likes sports .我的妹妹中没人喜欢运动.Many a student takes a walk on campus after dinner.许多学生晚饭后常在校园里散步.Every boy and girl shows great interest in extra-curriculum activities .每个男孩和女孩对课外活动都表现出很大的兴趣.
主谓一致详细用法见链接