Please call me when you are free .保持原句意基本不变

Please call me when you are free .保持原句意基本不变 I ( )you are free please call me Please call me when you are in___ please call _____me when you are free.A.on B.at C.for D.in please call me when you alone. Please call me when you my help please call me when you ------ -------Beijing Please call me back if you ____ free tomorrow. call me when you are sober Please call me when you are back的同义句是什么 Do you know when he----?When he -----,please call me. please give me a call when you will need me.