英语短语开头要不要大写,要不要标点 如 是 a set of keys 还是 A set of keys.

英语短语开头要不要大写,要不要标点 如 是 a set of keys 还是 A set of keys. 是a set of keys还是a set of key? A set of keys 是there is a set of keys还是there are a set of keys? a set of keys please. 求解(a set of keys) a set of keys英汉互译 a set of keys的英文是什么 Here _(be) a set of keys. a set of keys is on a set of keys 后用单数还是复数谓语 英语中a set of keys前面能不能加the