A fork and knife___on the table.

答案is
用and 连接的并列主语表示不同的人或物时,谓语动词用复数; 表示同一人、物或概念时,谓语动词用单数.如：
Jim and Lily have visited the Great Wall of China.
My classmate and friend lives in Shandong province.
The speaker and writer is going to give us a talk tomorrow.
A fork and knife is on the table.

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