下列句子中均有一处错误,请找出并改正.1.LiWeiworksharderthananystudentinhisclass.ABCD2.ShenzhenisoneofthebiggestcityinChina.ABCD(C处包括thebiggest)3.Ifyoudon'tknowthemeaningoftheword,youcanlookupi

　　下列句子中均有一处错误,请找出并改正.

　　1.LiWeiworksharderthananystudentinhisclass.

　　ABCD

　　2.ShenzhenisoneofthebiggestcityinChina.

　　ABCD(C处包括thebiggest)

　　3.Ifyoudon'tknowthemeaningoftheword,youcanlookupitinthedictionary.

　　ABCD(C处包括lookupit)

　　4.Wateringflowersarehardwork,butIenjoydoingit.

　　ABCD

　　5.Timwasveryexcitingwhenhesawthecomputer.

　　ABCD