找出句子中的错误~
1DidyouvisityoursisterinMondaymorning
2FivekidsstayedathomeandwatchTVlastweek.
3Iplaytenniswithmyclassmatesatschoollastweekend.
4Whatdidhedidlastnight?
5Hesittedthereforalongtimewithoutdoinganything.