请帮我看看一面的这些英语句子有哪些错误,
1.StudentA:WherewereyoulastThursday?
StudentB;ImustgototheNewZealandembassytogetavisaformytrip.
2.句子同上,只是把B的MUST改成OUGHTTO
3.musicisnoteasytodefine,andyethistorricallymostpeoplehaveagreedonwhichmusicalsoundsarenot.
4.packtheglassverycarefullyintheboxavodingtodamageit.
5.