on/in a saturday in october

on/in a saturday in october in saturday evening还是on saturday evening in saturday morning or on saturday morning we are going on a trip to the zoo( )(on this saturday ,in this saturday ,this saturday ,in Saturday afternoon前面用on还是in ____(on in )saturday and sunday in Saturday night还是on Saturday night还是at Saturday night They had a dinner party Saturday evening.A.in B.at C.on D.for He has a P.E.lesson ____ Saturday.A.in B.on C.at 说明原因. -When do you take piano lessons?-It ake piano lessons( )A.on every Saturday B.in every Saturday C.every Saturday They went to the park () Saturday afternoon.A.on B.in C.at D./ my cousin goes to the zoo()every Saturday.A.in B.at C.on D./ We went to the beach______last Saturday afternoon.A.on B.in C./ D.at Kay is going to the doctor---- Saturday morning and going to the mall ---Sunday.A.不填；on B.in；on C.on；in D.in；不填 We usually stay ( ) home ( )saturday morning.A.at```in B.at```on C.in```at说明理由, When is your party?__ six,__ Saturday evening.A.In;on B.At;in C.At;on D.From;in some children even watch TV _____ eight hours or more on Saturday.A.for B.on C.after D.in every Saturday morning 前面用什么介词,on还是in?