-WhenshallwegotovisitLucy,onMondayorTuesday?-dayisOK.I'mnotbusythesetwodays.()A.EveryB.AnyC.BothD.Either
-When shall we go to visit Lucy,on Monday or Tuesday?
-____________ day is OK.I'm not busy these two days.( )
A. Every
B. Any
C. Both
D. Either
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帮解下题·!谢已知A=w-x+y-z,将w换成x,同时将x换成y,y换成z,z换成w.这算一次轮换. 2021-01-07 …