【帮我看下有没有什么错误!wemustbecarefultomakefriends.Whenwechatwithsomeoneonline,wecan'ttellourrealinformationtohim.Second,whenwe'reindanger,weshouldaskpoliceforhelp.Third,whenwegotoastrangeplaceforapicni】

　　帮我看下有没有什么错误!

　　wemustbecarefultomakefriends.Whenwechatwithsomeoneonline,wecan'ttellourrealinformationtohim.Second,whenwe'reindanger,weshouldaskpoliceforhelp.Third,whenwegotoastrangeplaceforapicnic,weshouldeatsafefood.Andifweeatsomethingbadfoodandfeelterrible,wemustgotoahospitalandletadoctorcheck.Fourth,whenweplaysports,weshouldrelaxforalittlewhiletostopusfromfallingill.Finally,Ihopethatwecanfeelwelleveryday!