问题描述：
英语里一个单数 or 一个复数 后面跟is 还是 are
比如 I and cats （am/is/are) togerther
all living things are made up of 1 or many (cell/cells)
比如 I and cats （am/is/are) togerther
all living things are made up of 1 or many (cell/cells)
问题解答：
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