下列英语语句有错吗
1.LiMinghelpsanoldmancrossthestreet.
2.XuXiahelpstheelderlycarryheavythings.
3.SallyteacheschildrentospeakEnglish.
4.LiuLingcleansthegarden.
5.Theyareallwarm-heartedstudents.
6.Everyone,please,doessomethingshelpfultothesociety