Sportsandsleep./Hisresearchisaboutsportsandsleep.\r48.Heusuallytakesawalkoutside.\r49.Studentsshoulddooutdoorexerciseonceortwiceaday./Theyshoulddooutdoorexerciseonceortwicea\rday./Onceortwiceaday.\r50.Studentswillinvitetheirteachers./Theywillinvitetheirteachers./Theirteachers.\r51.Â(\rDearBrown,\rWearegoingtoorganizeanoutdoorrunforteachersandstudents.Iamwritingtoinviteyoutothisactivity.We\rallknowthatyouarefondofrunning,soitisourpleasureifyoucancome.\rWewillstartfromZhongshanParkandthengoaroundgreenstreetfor10kilometers.Therearetwoplacesto\rdrinkwaterontheway.Ifyouwanttoparticipate,pleasereplytomebeforethisFriday.Meanwhile,pleaseprepare\rsomecomfortablesportswearandshoes.Ifyouhaveanyquestions,youcancallme.Mynumberis12345678.\rWearelookingforwardtoyourparticipation.\rBestregards\rLiMing\rII