【TodayisSunday.Itisfineandwarm.Theskyisveryclearandblue.MyclassmatesandIarevery...TodayisSunday.Itisfineandwarm.Theskyisveryclearandblue.MyclassmatesandIareveryhappybecausewearegoingoutforapicnicatNanshan】

　　TodayisSunday.Itisfineandwarm.Theskyisveryclearandblue.MyclassmatesandIarevery...

　　TodayisSunday.Itisfineandwarm.Theskyisveryclearandblue.MyclassmatesandIareveryhappybecausewearegoingoutforapicnicatNanshanHill.Wearegoingtherebybike.Wehavefruit,eggs,meat,vegetables,knivesandsomeotherthingswithus.Aboutonehourandahalflater,wecometoaniceplaceatthefootofthehill.Therearemanybeautifulflowersandgreentrees.Birdsaresingingsweetsongs.Howpleasedweare!Thenwearebusywiththepicnic,someofusarecarryingwater把以上短文改成过去式语法正确