英语 主语为either…or…,neither…nor…,not only…but also等连接的并列名词

Either you or he is supposed to help the old man with a lot things in his hand.要么你,要么他,应该有个人去帮帮那个手里提满东西的老人.Neither you nor I am a good student.你我都不是好学生.Not only Mary's...谓语动词是哪个？Either you or he is supposed to help the old man with a lot things in his hand.要么你，要么他，应该有个人去帮帮那个手里提满东西的老人。谓语动词是：isNeither you nor I am a good student.你我都不是好学生。谓语动词是：amNot only Mary's parents, but also her friend Tom often takes care of her.不仅仅是玛丽的父母，她的朋友Tom也经常照顾她。谓语动词是：takes