Are you free now?为什么是Are

Are you free now?为什么是Are Are you free now? are you free now Now you are free ,why not go swimming with us?为什么Now you are Are you free now?的下一句 连词成句.now, are, you, free? Are you free now? 怎么回答? free you are now 连词成句 Form now henceforth,You are free. Are you free now Yes,I__________.(be) Are you free now?No,we____? Are you happy now为什么用Are