用and、but、或so合并句子)
2、TomorrowisOK.Iwon'tbefreeuntillunchtime.
3、Sallyfeltill.Shedidnotgototheconcertlastnight.
4、Smokingisabadhabit.Itisbadforyourhealth.
5、Mylegstillhurt.Iwenttoseeadoctor.