是Some set of keys.还是Some sets of keys.(⊙o⊙)?

是Some set of keys.还是Some sets of keys.(⊙o⊙)? Frank,look at that ____是填 a set of keys还是填set of keys A set of keys是单数还是复数? 两串钥匙是two set of keys还是two sets of keys 两串钥匙是two set of keys还是two sets of keys,哪个对?为什么? 是there is a set of keys还是there are a set of keys?is or are 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?哪个正确? 是where is a set of keys 还是where are 回答是It‘s 还是They're是Is this a set of keys 还是 Are they a set of keys Are the set of the keys ..? 还是Is the set of keys .? They are a set of keys ,It's a set of keys 哪个是正确的? a set of keys作主语是谓语动词使用单数还是复数 I lost a set of keys.然后是用 Is this yours?还是Are these yours? a set of keys 后用单数还是复数谓语 there is a set of keys,a book and some chalk on the desk?KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK I lost two ____(set)of keys a set of keys英汉互译 You use this set of keys for