are your parents free this friday evening为什么用are 不用will

are your parents free this friday evening为什么用are 不用will while your parents are away 为什么不用when are you going to the party on this friday evening 英语填空,完成对话A：What are your parents going to do this evening?B： What are your parents' job为什么不用What are your parent's job? which floor do your parents live on?为什么用do不用are? where do your parents live in 为什么用do而不用are 为什么What is your parents' job?中的parent是复数却不用are而用is? Are you free this evening等于哪个句子 —Are you free this evening? My parents are free this Saturday 同义句 They are my parents 提问用 Are they your parents?