注意：1、词数100左右。
2、可以适当增加细节，以使行文连贯。
参考范文
DearFrank,
Howhappywearetoknowthatyou’regoingtoparticipateinourChineseIdiomContest.Hereiswhatyouaresupposedtoknowabout.
We'regoingtoholdthecontestintheschoollibraryat8:00a.m.onDecember20,2016.CharacterswronglyusedaretoberecognizedinsomeChineseidioms.Besides,youarerequiredtosayouttheidiomsbyguessinggesturesofyourpartner.Hopefully,whatIhavetoremindyouofisthatyou’dbettergetonestoryofidiompreparedincaseyouareprobablyinvitedtotellone.Bytheway,allourChineseteacherswillbeinvitedasjudges.
Expectingyourexcellenceintheapproachingcontest.Bestwishes!
Yours，
LiPin