6、从句。故填so。【2018年】1.【2018·江苏】_______you can sleep well, you will lose the ability to focus, plan and staymotivated afteroneor two nights.A.OnceB.UnlessC.IfD.When【答案】B【解析】考查连词词义辨析及语境理解。句意:除非你睡得好,否则一两个晚上之后,你会失去专注、计划和保持动力的能力。A.Once一旦;B.Unless除非;C.If如果;D.When当……时候。故选B。2.【2018·天津】Let'snotpickthesepea